ARM: kirkwood: add gigabit ethernet and mvmdio device tree nodes

This patch adds mv643xx_eth and mvmdio device tree nodes for DT enabled
Kirkwood boards. Phy nodes are also added with reg property set on a
per-board basis.

Signed-off-by: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>
Signed-off-by: Jason Cooper <jason@lakedaemon.net>
diff --git a/arch/arm/boot/dts/kirkwood-is2.dts b/arch/arm/boot/dts/kirkwood-is2.dts
index c3f036b..ff9be45 100644
--- a/arch/arm/boot/dts/kirkwood-is2.dts
+++ b/arch/arm/boot/dts/kirkwood-is2.dts
@@ -30,3 +30,5 @@
 		};
 	};
 };
+
+&ethphy0 { reg = <8>; };