ARM: mxs: convert stmp378x_devb board to device tree

The enc28j60 spi device does not get converted to dts file, because
there is no mxs spi driver on mainline so far.  The enc28j60 spi
in mach-stmp378x_devb.c does not work anyway.
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>

arch/arm/boot/dts/stmp378x_devb.dts

+/*
+ * Copyright 2012 Freescale Semiconductor, Inc.
+ *
+ * The code contained herein is licensed under the GNU General Public
+ * License. You may obtain a copy of the GNU General Public License
+ * Version 2 or later at the following locations:
+ *
+ * http://www.opensource.org/licenses/gpl-license.html
+ * http://www.gnu.org/copyleft/gpl.html
+ */
+
+/dts-v1/;
+/include/ "imx23.dtsi"
+
+/ {
+	model = "Freescale STMP378x Development Board";
+	compatible = "fsl,stmp378x-devb", "fsl,imx23";
+
+	memory {
+		reg = <0x40000000 0x04000000>;
+	};
+
+	apb@80000000 {
+		apbh@80000000 {
+			ssp0: ssp@80010000 {
+				compatible = "fsl,imx23-mmc";
+				pinctrl-names = "default";
+				pinctrl-0 = <&mmc0_4bit_pins_a &mmc0_pins_fixup>;
+				bus-width = <4>;
+				wp-gpios = <&gpio1 30 0>;
+				vmmc-supply = <&reg_vddio_sd0>;
+				status = "okay";
+			};
+
+			pinctrl@80018000 {
+				pinctrl-names = "default";
+				pinctrl-0 = <&hog_pins_a>;
+
+				hog_pins_a: hog-gpios@0 {
+					reg = <0>;
+					fsl,pinmux-ids = <
+						0x11d3 /* MX23_PAD_PWM3__GPIO_1_29 */
+						0x11e3 /* MX23_PAD_PWM4__GPIO_1_30 */
+					>;
+					fsl,drive-strength = <0>;
+					fsl,voltage = <1>;
+					fsl,pull-up = <0>;
+				};
+			};
+		};
+
+		apbx@80040000 {
+			auart0: serial@8006c000 {
+				pinctrl-names = "default";
+				pinctrl-0 = <&auart0_pins_a>;
+				status = "okay";
+			};
+
+			duart: serial@80070000 {
+				pinctrl-names = "default";
+				pinctrl-0 = <&duart_pins_a>;
+				status = "okay";
+			};
+		};
+	};
+
+	regulators {
+		compatible = "simple-bus";
+
+		reg_vddio_sd0: vddio-sd0 {
+			compatible = "regulator-fixed";
+			regulator-name = "vddio-sd0";
+			regulator-min-microvolt = <3300000>;
+			regulator-max-microvolt = <3300000>;
+			gpio = <&gpio1 29 0>;
+		};
+	};
+};

arch/arm/mach-mxs/mach-mxs.c

@@ -267,6 +267,7 @@ static void __init mxs_machine_init(void)
 
 static const char *imx23_dt_compat[] __initdata = {
 	"fsl,imx23-evk",
+	"fsl,stmp378x_devb"
 	"olimex,imx23-olinuxino",
 	"fsl,imx23",
 	NULL,