board: trats2: Enable device tree on Trats2

This patch add dwmmc emmc controller node on exynos4 and exynos4412 device tree.

Signed-off-by: Beomho Seo <beomho.seo@samsung.com>
Signed-off-by: Jaehoon Chung <jh80.chung@samsung.com>
Tested-by: Piotr Wilczek <p.wilczek@samsung.com>
Cc: Lukasz Majewski <l.majewski@samsung.com>
Cc: Piotr Wilczek <p.wilczek@samsung.com>
Cc: Minkyu Kang <mk7.kang@samsung.com>
Signed-off-by: Minkyu Kang <mk7.kang@samsung.com>
diff --git a/arch/arm/dts/exynos4.dtsi b/arch/arm/dts/exynos4.dtsi
index 71dc7eb..110eb43 100644
--- a/arch/arm/dts/exynos4.dtsi
+++ b/arch/arm/dts/exynos4.dtsi
@@ -128,6 +128,14 @@
 		interrupts = <0 78 0>;
 	};
 
+	dwmmc@12550000 {
+		#address-cells = <1>;
+		#size-cells = <0>;
+		compatible = "samsung,exynos-dwmmc";
+		reg = <0x12550000 0x1000>;
+		interrupts = <0 131 0>;
+	};
+
 	gpio: gpio {
 		gpio-controller;
 		#gpio-cells = <2>;