dts: mtmips: enable eth port0 led and link poll functions for all boards

This patch adds default p0led status and phy0 link polling for all boards.

Reviewed-by: Stefan Roese <sr@denx.de>
Signed-off-by: Weijie Gao <weijie.gao@mediatek.com>

arch/mips/dts/gardena-smart-gateway-mt7688.dts

@@ -85,6 +85,15 @@
 	};
 };
 
+&pinctrl {
+	state_default: pin_state {
+		p0led {
+			groups = "p0led_a";
+			function = "led";
+		};
+	};
+};
+
 &uart0 {
 	status = "okay";
 };
@@ -109,3 +118,7 @@
 		reg = <1>;
 	};
 };
+
+&eth {
+	mediatek,poll-link-phy = <0>;
+};

arch/mips/dts/linkit-smart-7688.dts

@@ -26,6 +26,15 @@
 	};
 };
 
+&pinctrl {
+	state_default: pin_state {
+		p0led {
+			groups = "p0led_a";
+			function = "led";
+		};
+	};
+};
+
 &uart2 {
 	status = "okay";
 };
@@ -42,3 +51,7 @@
 		reg = <0>;
 	};
 };
+
+&eth {
+	mediatek,poll-link-phy = <0>;
+};

arch/mips/dts/mt7628a.dtsi

@@ -346,7 +346,7 @@
 		};
 	};
 
-	eth@10110000 {
+	eth: eth@10110000 {
 		compatible = "mediatek,mt7628-eth";
 		reg = <0x10100000 0x10000
 		       0x10110000 0x8000>;