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-wbd222.dts

@@ -136,6 +136,13 @@
 						"gpio0bgrp";
 					};
 				};
+				pinctrl-gmii {
+					/* This platform use both the ethernet ports */
+					mux {
+						function = "gmii";
+						groups = "gmii_gmac0_grp", "gmii_gmac1_grp";
+					};
+				};
 			};
 		};
 
@@ -165,5 +172,18 @@
 				<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 {
+				phy-mode = "rgmii";
+				phy-handle = <&phy1>;
+			};
+		};
 	};
 };