ARM: meson: Add status LED for Odroid-C1

Add the blue status LED to the Hardkernel Odroid C1 board DTS.

Signed-off-by: <edward.cragg@codethink.co.uk>
Signed-off-by: Carlo Caione <carlo@endlessm.com>

arch/arm/boot/dts/meson8b-odroidc1.dts

@@ -46,6 +46,7 @@
 
 /dts-v1/;
 #include "meson8b.dtsi"
+#include <dt-bindings/gpio/gpio.h>
 
 / {
 	model = "Hardkernel ODROID-C1";
@@ -58,6 +59,16 @@ aliases {
 	memory {
 		reg = <0x40000000 0x40000000>;
 	};
+
+	leds {
+		compatible = "gpio-leds";
+		blue {
+			label = "c1:blue:alive";
+			gpios = <&gpio_ao GPIOAO_13 GPIO_ACTIVE_LOW>;
+			linux,default-trigger = "heartbeat";
+			default-state = "off";
+		};
+	};
 };
 
 &uart_AO {