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

- Some cleanups in header files: those do not affect the generated
  binaries at all.
- The usual update of DT files from the kernel repo, mostly adding new
  board files this time. On the wake of this there is one defconfig to
  enable a new board, some H618 TV box branded as "Transpeed".
- Samuel's series to support SPL FIT image loading for 32-bit SoCs as
  well, so far this was restricted to ARM64 boards. I refrained from
  automatically enabling this everywhere, instead this requires user
  intervention during board configuration. This allows to ship the
  "crust" management processor firmware on H3 boards, which enables
  better power saving.
- One defconfig for an older H3 board. There was a close-by defconfig
  for a related board, but there are some differences which deserve a
  separate file.
- Support for the EMAC driver to work with fixed-link PHYs, which allows
  to directly wire the MAC to a switch IC.