brcm63xx: Add Observa VH4032N support

Add support for the Observa Telecom VH4032N router.

This is another BCM6368 router, 128 MB RAM, 32MB flash and 3 USB
host ports.

The wifi chip is an onboard Broadcom BCM43222.

Signed-off-by: Daniel Gonzalez Cabanelas <dgcbueu@gmail.com>
[jonas.gorski: use gpio-hog instead of abusing ephy-reset]
Signed-off-by: Jonas Gorski <jonas.gorski@gmail.com>

target/linux/brcm63xx/dts/vh4032n.dts

@@ -0,0 +1,102 @@
+/dts-v1/;
+
+#include "bcm6368.dtsi"
+
+#include <dt-bindings/input/input.h>
+
+/ {
+	model = "Observa VH4032N";
+	compatible = "observa,vh4032n", "brcm,bcm6368";
+
+	chosen {
+		bootargs = "root=/dev/mtdblock2 rootfstype=squashfs,jffs2 noinitrd console=ttyS0,115200";
+	};
+
+	gpio-keys-polled {
+		compatible = "gpio-keys-polled";
+		#address-cells = <1>;
+		#size-cells = <0>;
+		poll-interval = <20>;
+		debounce-interval = <60>;
+
+		reset {
+			label = "reset";
+			gpios = <&gpio1 2 1>;
+			linux,code = <KEY_RESTART>;
+		};
+		wps {
+			label = "wps";
+			gpios = <&gpio1 3 1>;
+			linux,code = <KEY_WPS_BUTTON>;
+		};
+	};
+
+	gpio-leds {
+		compatible = "gpio-leds";
+
+		dsl_blue {
+			label = "VH4032N:blue:dsl";
+			gpios = <&gpio0 2 1>;
+		};
+		dsl_red {
+			label = "VH4032N:red:dsl";
+			gpios = <&gpio0 5 1>;
+		};
+		hspa_blue {
+			label = "VH4032N:blue:hspa";
+			gpios = <&gpio0 11 1>;
+		};
+		hspa_red {
+			label = "VH4032N:red:hspa";
+			gpios = <&gpio0 12 1>;
+		};
+		power_blue {
+			label = "VH4032N:blue:power";
+			gpios = <&gpio0 22 0>;
+		};
+		power_red {
+			label = "VH4032N:red:power";
+			gpios = <&gpio0 24 0>;
+			default-state = "on";
+		};
+		voice_blue {
+			label = "VH4032N:blue:voice";
+			gpios = <&gpio0 25 1>;
+		};
+		voice_red {
+			label = "VH4032N:red:voice";
+			gpios = <&gpio0 26 1>;
+		};
+	};
+};
+
+&gpio0 {
+	usb_hub_reset {
+		gpio-hog;
+		gpios = <27 0>;
+		output-high;
+		line-name = "usb-hub-reset-gpio";
+	};
+};
+
+&pflash {
+	status = "ok";
+
+	linux,part-probe = "bcm63xxpart";
+
+	cfe@0 {
+		label = "CFE";
+		reg = <0x0000000 0x0020000>;
+		read-only;
+	};
+
+	linux@20000 {
+		label = "linux";
+		reg = <0x0020000 0x1fc0000>;
+	};
+
+	nvram@1fe0000 {
+		label = "nvram";
+		reg = <0x1fe0000 0x020000>;
+	};
+};