ARM: dts: stm32f429: Enable Ethernet on Eval board

MAC is connected to a PHY in MII mode.
Signed-off-by: NAlexandre TORGUE <alexandre.torgue@gmail.com>
Signed-off-by: NMaxime Coquelin <mcoquelin.stm32@gmail.com>

arch/arm/boot/dts/stm32429i-eval.dts

@@ -94,6 +94,21 @@
 	clock-frequency = <25000000>;
 };
 
+&ethernet0 {
+	status = "okay";
+	pinctrl-0	= <&ethernet0_mii>;
+	pinctrl-names	= "default";
+	phy-mode	= "mii-id";
+	mdio0 {
+		#address-cells = <1>;
+		#size-cells = <0>;
+		compatible = "snps,dwmac-mdio";
+		phy1: ethernet-phy@1 {
+			reg = <1>;
+		};
+	};
+};
+
 &usart1 {
 	pinctrl-0 = <&usart1_pins_a>;
 	pinctrl-names = "default";