Merge tag 'for-v2021.01-next' of https://gitlab.denx.de/u-boot/custodians/u-boot...

mpc83xx, keymile boards: enable DM_ETH and add DTS
  - mpc83xx: remove unneeded extern declaration in cpu_init
  - powerpc, qe: fix codingstyle issues for drivers/qe
  - powerpc, qe: add DTS support for parallel I/O ports
  - net, qe: add DM support for QE UEC ethernet
  - add DTS for all mpc83xx based boards from keymile
    mainly they are not mainlined to linux.
  - add u-boot specific dtsi
  - add stdout-path
  - add missing ucc4 par_io definitions, which were
    in board code, but not in linux DTS
  - remove not used ethernet nodes