ARM: at91: add PWM device node

Add PWM device node for AT91 series SoC.

Signed-off-by: Bo Shen <voice.shen@atmel.com>
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
diff --git a/arch/arm/boot/dts/at91sam9263.dtsi b/arch/arm/boot/dts/at91sam9263.dtsi
index 22e255a..c8fa9b9 100644
--- a/arch/arm/boot/dts/at91sam9263.dtsi
+++ b/arch/arm/boot/dts/at91sam9263.dtsi
@@ -30,6 +30,7 @@
 		i2c0 = &i2c0;
 		ssc0 = &ssc0;
 		ssc1 = &ssc1;
+		pwm0 = &pwm0;
 	};
 	cpus {
 		#address-cells = <0>;
@@ -575,6 +576,14 @@
 				pinctrl-0 = <&pinctrl_spi1>;
 				status = "disabled";
 			};
+
+			pwm0: pwm@fffb8000 {
+				compatible = "atmel,at91sam9rl-pwm";
+				reg = <0xfffb8000 0x300>;
+				interrupts = <20 IRQ_TYPE_LEVEL_HIGH 4>;
+				#pwm-cells = <3>;
+				status = "disabled";
+			};
 		};
 
 		fb0: fb@0x00700000 {