Merge branch 'Remainder-for-DT-bindings-for-Felix-DSA-switch-on-LS1028A'

Vladimir Oltean says:

====================
Remainder for "DT bindings for Felix DSA switch on LS1028A"

This series is the remainder of patchset [0] which has been merged
through Shawn Guo's devicetree tree.

It contains changes to the PHY mode validation in the Felix driver
("gmii" to "internal") and the documentation for the DT bindings.

[0]: https://patchwork.ozlabs.org/cover/1242716/
====================

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