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 <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/20220620175033.130468-4-krzysztof.kozlowski@linaro.orgAcked-by: Jacek Anaszewski <jacek.anaszewski@gmail.com>

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

@@ -7,6 +7,7 @@
  */
 
 /dts-v1/;
+#include <dt-bindings/leds/common.h>
 #include "exynos4412-midas.dtsi"
 
 / {
@@ -26,7 +27,8 @@ led-controller {
 		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>;