Merge branch 'marvell10g-phy-updates'

Russell King says:

====================
marvell10g updates

This series:
- adds MDI/MDIX reporting
- adds support for 10/100Mbps half-duplex link modes
- adds a comment describing the setup on VF610 ZII boards (where
  the phy interface mode doesn't change.)
- cleans up the phy interace mode switching
====================

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