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

The first four patches are actual fixes. The last three patches add
support for the apparently popular OrangePi Zero 3 board: multiple
people seem to be champing at the bit, so I'd rather give them
something real instead of people using random trees they found on the
Internet. It's actually mostly the new defconfig file anyway, so the
chances for regressions are very slim.