[POWERPC] FSL: enet device tree cleanups

* Removed address fields in ethernet nodes
* Removed #address-cells, #size-cells from gianfar nodes
* Added cell-index to gianfar and ucc ethernet nodes
* Added enet[0..3] labels
* Renamed compatible node for gianfar mdio to "fsl,gianfar-mdio"
* Removed device_type = "mdio"

The matching for gianfar mdio still supports the old "mdio"/"gianfar" combo
but it is now considered deprecated.

Signed-off-by: Kumar Gala <galak@kernel.crashing.org>

arch/powerpc/boot/dts/mpc832x_mds.dts

@@ -208,20 +208,15 @@
 			mode = "slave";
 		};
 
-		ucc@2200 {
+		enet0: ucc@2200 {
 			device_type = "network";
 			compatible = "ucc_geth";
 			model = "UCC";
+			cell-index = <3>;
 			device-id = <3>;
 			reg = <2200 200>;
 			interrupts = <22>;
 			interrupt-parent = < &qeic >;
-			/*
-			 * mac-address is deprecated and will be removed
-			 * in 2.6.25.  Only recent versions of
-			 * U-Boot support local-mac-address, however.
-			 */
-			mac-address = [ 00 00 00 00 00 00 ];
 			local-mac-address = [ 00 00 00 00 00 00 ];
 			rx-clock = <19>;
 			tx-clock = <1a>;
@@ -229,20 +224,15 @@
 			pio-handle = < &pio3 >;
 		};
 
-		ucc@3200 {
+		enet1: ucc@3200 {
 			device_type = "network";
 			compatible = "ucc_geth";
 			model = "UCC";
+			cell-index = <4>;
 			device-id = <4>;
 			reg = <3200 200>;
 			interrupts = <23>;
 			interrupt-parent = < &qeic >;
-			/*
-			 * mac-address is deprecated and will be removed
-			 * in 2.6.25.  Only recent versions of
-			 * U-Boot support local-mac-address, however.
-			 */
-			mac-address = [ 00 00 00 00 00 00 ];
 			local-mac-address = [ 00 00 00 00 00 00 ];
 			rx-clock = <17>;
 			tx-clock = <18>;