bmips: dgnd3700v2: enable external BCM53125 switch

The Netgear DGND3700v2 has an external BCM53125 switch which can now be enabled
as a DSA disjoint switch tree setup.

Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>

target/linux/bmips/dts/bcm6362-netgear-dgnd3700-v2.dts

@@ -148,6 +148,58 @@
 	};
 };
 
+&mdio_ext {
+	switch@1e {
+		compatible = "brcm,bcm53125";
+		reg = <30>;
+
+		dsa,member = <1 0>;
+
+		ports {
+			#address-cells = <1>;
+			#size-cells = <0>;
+
+			port@0 {
+				reg = <0>;
+				label = "lan1";
+			};
+
+			port@1 {
+				reg = <1>;
+				label = "lan2";
+			};
+
+			port@2 {
+				reg = <2>;
+				label = "lan3";
+			};
+
+			port@3 {
+				reg = <3>;
+				label = "lan4";
+			};
+
+			port@4 {
+				reg = <4>;
+				label = "wan";
+			};
+
+			port@8 {
+				reg = <8>;
+				label = "cpu";
+
+				phy-mode = "rgmii";
+				ethernet = <&switch0port4>;
+
+				fixed-link {
+					speed = <1000>;
+					full-duplex;
+				};
+			};
+		};
+	};
+};
+
 &nflash {
 	status = "okay";
 
@@ -224,8 +276,10 @@
 };
 
 &switch0 {
+	dsa,member = <0 0>;
+
 	ports {
-		port@4 {
+		switch0port4: port@4 {
 			reg = <4>;
 			label = "extsw";
 

target/linux/bmips/nand/base-files/etc/board.d/02_network

@@ -11,7 +11,7 @@ comtrend,vr-3032u)
 	;;
 netgear,dgnd3700-v2)
 	ucidef_set_bridge_device switch
-	ucidef_set_interface_lan "extsw"
+	ucidef_set_interfaces_lan_wan "lan1 lan2 lan3 lan4" "wan"
 	;;
 esac