Merge branch 'ave-fix-the-activation-issues-for-some-UniPhier-SoCs'

Kunihiko Hayashi says:

====================
ave: fix the activation issues for some UniPhier SoCs

This add the following stuffs to fix the activation issues and satisfy
requirements for AVE ethernet driver implemented on some UniPhier SoCs.

- Add support for additional necessary clocks and resets, because the kernel
  is stalled on Pro4 due to lack of them.

- Check whether the SoC supports the specified phy-mode

- Add DT property support indicating system controller that has the feature
  for configurating phy-mode including built-in phy on LD11.

v1: https://www.spinics.net/lists/netdev/msg494904.html

Changes since v1:
- Add 'Reviewed-by' lines
====================

Signed-off-by: David S. Miller <davem@davemloft.net>