ARM: dts: Add pwmX_out pinctrl nodes to exynos5420

Adds the PWM nodes to 5420 pinctrl dtsi file.
Signed-off-by: Arun Kumar K <arun.kk@samsung.com>
Reviewed-by: Doug Anderson <dianders@chromium.org>
Reviewed-by: Tomasz Figa <t.figa@samsung.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>

arch/arm/boot/dts/exynos5420-pinctrl.dtsi

@@ -624,6 +624,34 @@ i2c6_hs_bus: i2c6-hs-bus {
 			samsung,pin-drv = <0>;
 		};
 
+		pwm0_out: pwm0-out {
+			samsung,pins = "gpb2-0";
+			samsung,pin-function = <2>;
+			samsung,pin-pud = <0>;
+			samsung,pin-drv = <0>;
+		};
+
+		pwm1_out: pwm1-out {
+			samsung,pins = "gpb2-1";
+			samsung,pin-function = <2>;
+			samsung,pin-pud = <0>;
+			samsung,pin-drv = <0>;
+		};
+
+		pwm2_out: pwm2-out {
+			samsung,pins = "gpb2-2";
+			samsung,pin-function = <2>;
+			samsung,pin-pud = <0>;
+			samsung,pin-drv = <0>;
+		};
+
+		pwm3_out: pwm3-out {
+			samsung,pins = "gpb2-3";
+			samsung,pin-function = <2>;
+			samsung,pin-pud = <0>;
+			samsung,pin-drv = <0>;
+		};
+
 		i2c7_hs_bus: i2c7-hs-bus {
 			samsung,pins = "gpb2-2", "gpb2-3";
 			samsung,pin-function = <3>;