ARM: dts: at91: sama5d2 Xplained: add leds node

Add the three leds on the sama5d2 Xplained board with their pinctrl node.
The blue led is positioned with the "heartbeat" trigger.
Signed-off-by: NWenyou Yang <wenyou.yang@atmel.com>
Acked-by: NAlexandre Belloni <alexandre.belloni@free-electrons.com>
[nicolas.ferre@atmel.com: add commit message and adapt to newer kernel]
Signed-off-by: NNicolas Ferre <nicolas.ferre@atmel.com>

arch/arm/boot/dts/at91-sama5d2_xplained.dts

@@ -307,6 +307,13 @@ pinctrl_key_gpio_default: key_gpio_default {
 					bias-pull-up;
 				};
 
+				pinctrl_led_gpio_default: led_gpio_default {
+					pinmux = <PIN_PB0__GPIO>,
+						 <PIN_PB5__GPIO>,
+						 <PIN_PB6__GPIO>;
+					bias-pull-up;
+				};
+
 				pinctrl_macb0_default: macb0_default {
 					pinmux = <PIN_PB14__GTXCK>,
 						 <PIN_PB15__GTXEN>,
@@ -418,4 +425,27 @@ bp1 {
 			linux,code = <0x104>;
 		};
 	};
+
+	leds {
+		compatible = "gpio-leds";
+		pinctrl-names = "default";
+		pinctrl-0 = <&pinctrl_led_gpio_default>;
+		status = "okay";
+
+		red {
+			label = "red";
+			gpios = <&pioA 38 GPIO_ACTIVE_LOW>;
+		};
+
+		green {
+			label = "green";
+			gpios = <&pioA 37 GPIO_ACTIVE_LOW>;
+		};
+
+		blue {
+			label = "blue";
+			gpios = <&pioA 32 GPIO_ACTIVE_LOW>;
+			linux,default-trigger = "heartbeat";
+		};
+	};
 };