ARM: dts: exynos: add function and color to aat1290 flash LED node in Galaxy S3

Add common LED properties - the function and color - to aat1290 flash
LED node in Galaxy S3, so we can drop deprecated label property.

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

arch/arm/boot/dts/exynos4412-galaxy-s3.dtsi

···
  */
 
 /dts-v1/;
+#include <dt-bindings/leds/common.h>
 #include "exynos4412-midas.dtsi"
 
 / {
···
 		pinctrl-2 = <&camera_flash_isp>;
 
 		led {
-			label = "flash";
+			function = LED_FUNCTION_FLASH;
+			color = <LED_COLOR_ID_WHITE>;
 			led-max-microamp = <520833>;
 			flash-max-microamp = <1012500>;
 			flash-max-timeout-us = <1940000>;