Merge remote-tracking branch 'le/libreelec-8.2' into libreelec-8.2

libcec: bump to f2c4ca7

kodi: bump to 0b4cdc9

ffmpeg: use O3 optimization level for ARM

projects/S905: don't print dd status when updating

qca9377-firmware-aml: fix install path

projects/S9*: bump kernel to 298836c

projects/S805: set display mode to avoid kernel oops

projects/S9*: build dwc_otg as module to improve KVim compatibility

projects/S805: disable swap in kernel config