drivers: disk: Default SDMMC Kconfig based on DT

Set default of DISK_DRIVER_SDMMC Kconfig based on the devicetree.
This should avoid having to set the kconfig at the board level
in order to use sdmmc.

Signed-off-by: Declan Snyder <[email protected]>

Author: decsny

drivers/disk/Kconfig.sdmmc

@@ -6,6 +6,7 @@ DT_STM32_SDMMC_HAS_DMA := $(dt_nodelabel_has_prop,sdmmc,dmas)
 
 config DISK_DRIVER_SDMMC
 	bool "SDMMC card driver"
+	default y if DT_HAS_ZEPHYR_SDMMC_DISK_ENABLED
 	help
 	  SDMMC card driver.