[BUG] Kconfig file from openvela is incompatible with kconfig-frontends

[acassis]

Description / Steps to reproduce the issue

Although the official documentation says user can install kconfig-frontends or python kconf-libs, the build process is failing with kconfig-frontends:

$ ./build.sh vendor/openvela/boards/vela/configs/goldfish-armeabi-v7a-ap -j$(nproc)
Build command line:
  /home/alan/OpenVela/nuttx/tools/configure.sh -e /home/alan/OpenVela/vendor/openvela/boards/vela/configs/goldfish-armeabi-v7a-ap
  make -C /home/alan/OpenVela/nuttx EXTRAFLAGS=-Wno-cpp -j16
  make -C /home/alan/OpenVela/nuttx savedefconfig
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* __      __      _         *
* \ \    / /     | |        *
*  \ \  / / ___  | |  __ _  *
*   \ \/ / / _ \ | | / _` | *
*    \  / |  __/ | || (_| | *
*     \/   \___| |_| \__,_| *
*                           *
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  Copy files
  Select CONFIG_HOST_LINUX=y
  Refreshing...
CP: arch/dummy/Kconfig to /home/alan/OpenVela/nuttx/arch/dummy/dummy_kconfig
CP: boards/dummy/Kconfig to /home/alan/OpenVela/nuttx/../vendor/openvela/boards/vela//Kconfig
LN: platform/board to /home/alan/OpenVela/apps/platform/dummy
LN: include/arch to arch/arm/include
LN: include/arch/board to /home/alan/OpenVela/nuttx/../vendor/openvela/boards/vela//include
LN: drivers/platform to /home/alan/OpenVela/nuttx/drivers/dummy
LN: include/arch/chip to /home/alan/OpenVela/nuttx/arch/arm/include/goldfish
LN: arch/arm/src/chip to /home/alan/OpenVela/nuttx/arch/arm/src/goldfish
LN: arch/arm/src/board to /home/alan/OpenVela/nuttx/../vendor/openvela/boards/vela//../common
LN: arch/arm/src/board/board to /home/alan/OpenVela/nuttx/../vendor/openvela/boards/vela//src
mkkconfig in /home/alan/OpenVela/apps/audioutils
mkkconfig in /home/alan/OpenVela/apps/benchmarks
mkkconfig in /home/alan/OpenVela/apps/boot
mkkconfig in /home/alan/OpenVela/apps/canutils
mkkconfig in /home/alan/OpenVela/apps/crypto
mkkconfig in /home/alan/OpenVela/apps/database
mkkconfig in /home/alan/OpenVela/apps/examples/mcuboot
mkkconfig in /home/alan/OpenVela/apps/examples/module
mkkconfig in /home/alan/OpenVela/apps/examples/sotest
mkkconfig in /home/alan/OpenVela/apps/examples
mkkconfig in /home/alan/OpenVela/external/android/frameworks/native/cmds
mkkconfig in /home/alan/OpenVela/external/android/frameworks/native/services
mkkconfig in /home/alan/OpenVela/external/android/frameworks/native
mkkconfig in /home/alan/OpenVela/external/android/frameworks
mkkconfig in /home/alan/OpenVela/external/android/hardware
mkkconfig in /home/alan/OpenVela/external/android/system/core
mkkconfig in /home/alan/OpenVela/external/android/system
mkkconfig in /home/alan/OpenVela/external/android
mkkconfig in /home/alan/OpenVela/external/optee
mkkconfig in /home/alan/OpenVela/external
mkkconfig in /home/alan/OpenVela/frameworks/connectivity
mkkconfig in /home/alan/OpenVela/frameworks/graphics
mkkconfig in /home/alan/OpenVela/frameworks/multimedia
mkkconfig in /home/alan/OpenVela/frameworks/runtimes/services/xmsdemo
mkkconfig in /home/alan/OpenVela/frameworks/runtimes/services
mkkconfig in /home/alan/OpenVela/frameworks/runtimes/wasm
mkkconfig in /home/alan/OpenVela/frameworks/runtimes
mkkconfig in /home/alan/OpenVela/frameworks/security/ca
mkkconfig in /home/alan/OpenVela/frameworks/security/ta
mkkconfig in /home/alan/OpenVela/frameworks/security/tools
mkkconfig in /home/alan/OpenVela/frameworks/security
mkkconfig in /home/alan/OpenVela/frameworks/system/binder/cmds
mkkconfig in /home/alan/OpenVela/frameworks/system/binder/examples
mkkconfig in /home/alan/OpenVela/frameworks/system/binder/performance
mkkconfig in /home/alan/OpenVela/frameworks/system/binder
mkkconfig in /home/alan/OpenVela/frameworks/system
mkkconfig in /home/alan/OpenVela/frameworks
mkkconfig in /home/alan/OpenVela/apps/fsutils
mkkconfig in /home/alan/OpenVela/apps/games
mkkconfig in /home/alan/OpenVela/apps/graphics
mkkconfig in /home/alan/OpenVela/apps/industry
mkkconfig in /home/alan/OpenVela/apps/inertial
mkkconfig in /home/alan/OpenVela/apps/interpreters/luamodules
mkkconfig in /home/alan/OpenVela/apps/interpreters
mkkconfig in /home/alan/OpenVela/apps/logging
mkkconfig in /home/alan/OpenVela/apps/lte
mkkconfig in /home/alan/OpenVela/apps/math
mkkconfig in /home/alan/OpenVela/apps/mlearning
mkkconfig in /home/alan/OpenVela/apps/netutils
mkkconfig in /home/alan/OpenVela/packages/demos
mkkconfig in /home/alan/OpenVela/packages
mkkconfig in /home/alan/OpenVela/apps/sdr
mkkconfig in /home/alan/OpenVela/apps/system
mkkconfig in /home/alan/OpenVela/apps/testing
mkkconfig in /home/alan/OpenVela/vendor/xiaomi/vela/pyxis
mkkconfig in /home/alan/OpenVela/vendor/xiaomi/vela
mkkconfig in /home/alan/OpenVela/vendor/xiaomi
mkkconfig in /home/alan/OpenVela/vendor
mkkconfig in /home/alan/OpenVela/apps/videoutils
mkkconfig in /home/alan/OpenVela/apps/wireless/bluetooth
mkkconfig in /home/alan/OpenVela/apps/wireless/ieee802154
mkkconfig in /home/alan/OpenVela/apps/wireless
mkkconfig in /home/alan/OpenVela/apps
/home/alan/OpenVela/external/zblue/Kconfig:19: syntax error
/home/alan/OpenVela/external/zblue/Kconfig:18: unknown option "osource"
/home/alan/OpenVela/external/zblue/Kconfig:19: unknown option "osource"
/home/alan/OpenVela/external/zblue/Kconfig:20: unknown option "osource"
/home/alan/OpenVela/external/zblue/Kconfig:21: unknown option "osource"
/home/alan/OpenVela/frameworks/multimedia/media/Kconfig:122: syntax error
/home/alan/OpenVela/frameworks/multimedia/Kconfig:8: missing end statement for this entry
/home/alan/OpenVela/apps/frameworks/Kconfig:8: missing end statement for this entry
Kconfig:2788: missing end statement for this entry
/home/alan/OpenVela/frameworks/multimedia/media/Kconfig:121: invalid statement
/home/alan/OpenVela/frameworks/multimedia/Kconfig:10: unexpected end statement
/home/alan/OpenVela/frameworks/system/utils/Kconfig:163: syntax error
/home/alan/OpenVela/frameworks/system/Kconfig:8: missing end statement for this entry
/home/alan/OpenVela/frameworks/system/utils/Kconfig:162: invalid statement
/home/alan/OpenVela/frameworks/system/Kconfig:16: unexpected end statement
/home/alan/OpenVela/apps/frameworks/Kconfig:15: unexpected end statement
/home/alan/OpenVela/apps/graphics/lvgl/Kconfig:29: syntax error
/home/alan/OpenVela/apps/graphics/lvgl/Kconfig:28: unknown option "osource"
Kconfig:2790: unexpected end statement
make: *** [tools/Unix.mk:696: olddefconfig] Error 1
ERROR: failed to refresh
Error: ############# config /home/alan/OpenVela/vendor/openvela/boards/vela/configs/goldfish-armeabi-v7a-ap fail ##############

Issue Architecture

[Arch: arm]

Issue Area

System: Build system