* Marvell MDIO Ethernet Controller interface

The Ethernet controllers of the Marvel Armada 3700 and Armada 7k/8k
have an identical unit that provides an interface with the MDIO bus.
This driver handles this MDIO interface.

Mandatory properties:
SoC specific:
	- #address-cells: Must be <1>.
	- #size-cells: Must be <0>.
	- compatible: Should be "marvell,orion-mdio" (for SMI)
				"marvell,xmdio"	     (for XSMI)
	- reg: Base address and size SMI/XMSI bus.

Please refer to "mdio.txt" for generic MDIO bus bindings.
