arm: mvebu: theadorable: Update eth & mdio DT nodes

With the recent changes in the Marvel mvneta network driver, the MDIO
bus is not connected any more. This patch updates the DT nodes to use
the nodes from the dtsi files instead of creating ad-hoc nodes.

Signed-off-by: Stefan Roese <sr@denx.de>

arch/arm/dts/armada-xp-theadorable.dts

@@ -107,20 +107,6 @@
 				status = "okay";
 			};
 
-			mdio {
-				#address-cells = <1>;
-				#size-cells = <0>;
-				phy0: ethernet-phy@0 {
-					reg = <0>;
-				};
-			};
-
-			ethernet@70000 {
-				status = "okay";
-				phy = <&phy0>;
-				phy-mode = "sgmii";
-			};
-
 			usb@50000 {
 				status = "okay";
 			};
@@ -166,6 +152,18 @@
 	clock-frequency = <100000>;
 };
 
+&mdio {
+	phy0: ethernet-phy@0 {
+		reg = <0>;
+	};
+};
+
+&eth0 {
+	status = "okay";
+	phy = <&phy0>;
+	phy-mode = "sgmii";
+};
+
 &spi0 {
 	status = "okay";
 
@@ -198,7 +196,6 @@
 	};
 };
 
-
 &pciec {
 	status = "okay";