Merge tag 'video-for-2021.01-rc1' of https://gitlab.denx.de/u-boot/custodians/u-boot-video

 - disable CONFIG_VIDEO to remove DM conversion warnings
   for boards: at91sam9, eb_cpu5282, ls1021aqds, ls1021atwr,
   mx23evk, mx6sxsabresd, mx7dsabresd, nokia_rx51, picosam9g45,
   sansa_fuze_plus, xfi3