Merge branch 'master' of https://source.denx.de/u-boot/custodians/u-boot-sunxi

Merge branch 'master' of https://source.denx.de/u-boot/custodians/u-boot-sunxi

Apologies for the delay, but please pull those sunxi changes into
v2026.07. Nothing earth shattering, mostly minor improvements like
better SPL power LED support, and fixes to some H616 DRAM setup. Also
some more forward looking enhancement for the SPI code. I also pulled in
Richard's raw NAND flash improvements for the H6/H616 SoC, though this
lacks proper peer testing due to the lack of mainline support for any
board actually employing those chips.