Merge branch 'net-phy-Add-AST2600-MDIO-support'

Andrew Jeffery says:

====================
net: phy: Add AST2600 MDIO support

v2 of the ASPEED MDIO series addresses comments from Rob on the devicetree
bindings and Andrew on the driver itself.

v1 of the series can be found here:

http://patchwork.ozlabs.org/cover/1138140/
====================

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