ARM: dts: Add ethernet to a bunch of platforms

These platforms have the PHY defined already so we just
need to add a single device node to each of them to activate
the ethernet device.

The PHY skew/delay settings for pin control is known from a
few vendor trees and old OpenWRT patch sets.

Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

arch/arm/boot/dts/gemini-wbd111.dts

@@ -160,5 +160,17 @@
 				<0x6000 0 0 3 &pci_intc 1>,
 				<0x6000 0 0 4 &pci_intc 2>;
 		};
+
+		ethernet@60000000 {
+			status = "okay";
+
+			ethernet-port@0 {
+				phy-mode = "rgmii";
+				phy-handle = <&phy0>;
+			};
+			ethernet-port@1 {
+				/* Not used in this platform */
+			};
+		};
 	};
 };