Orangepi5 maintenance

[EvilOlaf]

Description

• bump current u-boot to something more recent than old vendor bsp one
• unfix versions of BL31 and DDR
• unfreeze vendor kernel upgrades, seems good again.

Sata stuff may need testing since I cannot test myself.

How Has This Been Tested?

• build u-boot and image
• boot from microsd
• upgrade an existing setup with vendor kernel on NVMe/SPI combo from 24.05.y to 25.2.y Armbian kernel release, reboot
• same setup as above, but overwrite vendor bsp u-boot with 2025.01, reboot

Checklist:

• My code follows the style guidelines of this project
• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• My changes generate no new warnings
• Any dependent changes have been merged and published in downstream modules