ARM64: dts: marvell: Add network support for Armada 3700

Add neta nodes for network support both in device tree for the SoC and
the board.
Signed-off-by: NGregory CLEMENT <gregory.clement@free-electrons.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

arch/arm64/boot/dts/marvell/armada-3720-db.dts

@@ -81,3 +81,26 @@
 &pcie0 {
 	status = "okay";
 };
+
+&mdio {
+	status = "okay";
+	phy0: ethernet-phy@0 {
+		reg = <0>;
+	};
+
+	phy1: ethernet-phy@1 {
+		reg = <1>;
+	};
+};
+
+&eth0 {
+	phy-mode = "rgmii-id";
+	phy = <&phy0>;
+	status = "okay";
+};
+
+&eth1 {
+	phy-mode = "sgmii";
+	phy = <&phy1>;
+	status = "okay";
+};

arch/arm64/boot/dts/marvell/armada-37xx.dtsi

@@ -140,6 +140,29 @@
 				};
 			};
 
+			eth0: ethernet@30000 {
+				   compatible = "marvell,armada-3700-neta";
+				   reg = <0x30000 0x4000>;
+				   interrupts = <GIC_SPI 42 IRQ_TYPE_LEVEL_HIGH>;
+				   clocks = <&sb_periph_clk 8>;
+				   status = "disabled";
+			};
+
+			mdio: mdio@32004 {
+				#address-cells = <1>;
+				#size-cells = <0>;
+				compatible = "marvell,orion-mdio";
+				reg = <0x32004 0x4>;
+			};
+
+			eth1: ethernet@40000 {
+				compatible = "marvell,armada-3700-neta";
+				reg = <0x40000 0x4000>;
+				interrupts = <GIC_SPI 45 IRQ_TYPE_LEVEL_HIGH>;
+				clocks = <&sb_periph_clk 7>;
+				status = "disabled";
+			};
+
 			usb3: usb@58000 {
 				compatible = "marvell,armada3700-xhci",
 				"generic-xhci";