ARM: at91: usb_a9g20/dt: add leds support

Signed-off-by: NJean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Acked-by: NNicolas Ferre <nicolas.ferre@atmel.com>

arch/arm/boot/dts/usb_a9g20.dts

@@ -32,4 +32,14 @@
 			};
 		};
 	};
+
+	leds {
+		compatible = "gpio-leds";
+
+		user_led {
+			label = "user_led";
+			gpios = <&pioB 21 1>;
+			linux,default-trigger = "heartbeat";
+		};
+	};
 };