ARM: dts: exynos: add function to LED node in Origen 4210

Add common LED property - the function - to LED node in Origen 4210.

Signed-off-by: Krzysztof Kozlowski <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]

arch/arm/boot/dts/exynos4210-origen.dts

···
 #include "exynos4210.dtsi"
 #include <dt-bindings/gpio/gpio.h>
 #include <dt-bindings/input/input.h>
+#include <dt-bindings/leds/common.h>
 #include "exynos-mfc-reserved-memory.dtsi"
 
 / {
···
 		compatible = "gpio-leds";
 		status {
 			gpios = <&gpx1 3 GPIO_ACTIVE_LOW>;
+			function = LED_FUNCTION_HEARTBEAT;
 			linux,default-trigger = "heartbeat";
 		};
 	};