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

This switches all boards with the Allwinner H616/H618/H313/H700 SoCs over to
use OF_UPSTREAM. We are doing it for this SoC family only since the DTs
between the U-Boot and the kernel repo are exactly identical, whereas other
families have one compatibility fix in U-Boot to allow booting older kernels.
Other will follow if this plays out well.

The biggest chunk otherwise is adding support for an Anbernic game console,
using the H700 SoC. For that we need to enhance the DRAM support code, and
pick two DT commits from the mainline kernel/DT rebasing repo, followed
by the defconfig patch.

On top of that two small fixes for the old Allwinner A80.

Gitlab CI passed, and I booted that briefly on some boards, including an
H616 and an H618 one (with LPDDR4).

diff --cc arch/arm/dts/Makefile
Simple merge