exynos: dts: Add pwm device tree node

Add this node from Linux v4.4 so that PWMs can be used in U-Boot.

Signed-off-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Minkyu Kang <mk7.kang@samsung.com>

arch/arm/dts/exynos5250.dtsi

@@ -116,4 +116,11 @@
 		};
 	};
 
+	pwm: pwm@12dd0000 {
+		compatible = "samsung,exynos4210-pwm";
+		reg = <0x12dd0000 0x100>;
+		samsung,pwm-outputs = <0>, <1>, <2>, <3>;
+		#pwm-cells = <3>;
+	};
+
 };

arch/arm/dts/exynos54xx.dtsi

@@ -197,6 +197,13 @@
 		mem-type = "ddr3";
 	};
 
+	pwm: pwm@12dd0000 {
+		compatible = "samsung,exynos4210-pwm";
+		reg = <0x12dd0000 0x100>;
+		samsung,pwm-outputs = <0>, <1>, <2>, <3>;
+		#pwm-cells = <3>;
+	};
+
 	xhci1: xhci@12400000 {
 		compatible = "samsung,exynos5250-xhci";
 		reg = <0x12400000 0x10000>;