Merge tag 'video-20241022' of https://source.denx.de/u-boot/custodians/u-boot-video

CI: https://source.denx.de/u-boot/custodians/u-boot-video/-/pipelines/22907

* VNBYTES() comment fix
* add VIDEO dependency for FDT_SIMPLEFB
* fdt_simplefb: drop not needed CONFIG_VIDEO check
* am62x,evm: preserve splash screen while OS is booting
* simplefb: warning fix for CONFIG_FDT_64BIT=n