Merge tag 'u-boot-amlogic-20230417' of https://source.denx.de/u-boot/custodians/u-boot-amlogic

- Add initial support for BPI-CM4
- Spring Cleanup of Amlogic board documentation
- add support for BananaPi M2-Pro
- add support for BananaPi M2S
- add support for Radxa Zero2
- add support for WeTek Hub and WeTek Play2
- switch LibreTech-CC v2 and WeTek Core2 to EE powerdomain
- add support for Beelink GT1 Ultimate