ARM: dts: exynos: Add flash support to Galaxy S3 boards

The Galaxy S3 boards use an aat1290 to control the flash LED. Add the
relevant device tree configuration to use it.

Signed-off-by: Simon Shields <[e-mail]>
Signed-off-by: Denis 'GNUtoo' Carikli <[e-mail]> [rebase]
Signed-off-by: Krzysztof Kozlowski <[e-mail]>

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

···
 		i2c10 = &i2c_cm36651;
 	};
 
+	aat1290 {
+		compatible = "skyworks,aat1290";
+		flen-gpios = <&gpj1 1 GPIO_ACTIVE_HIGH>;
+		enset-gpios = <&gpj1 2 GPIO_ACTIVE_HIGH>;
+
+		pinctrl-names = "default", "host", "isp";
+		pinctrl-0 = <&camera_flash_host>;
+		pinctrl-1 = <&camera_flash_host>;
+		pinctrl-2 = <&camera_flash_isp>;
+
+		flash-led {
+			label = "flash";
+			led-max-microamp = <520833>;
+			flash-max-microamp = <1012500>;
+			flash-max-timeout-us = <1940000>;
+		};
+	};
+
 	lcd_vdd3_reg: voltage-regulator-6 {
 		compatible = "regulator-fixed";
 		regulator-name = "LCD_VDD_2.2V";
···
 	regulator-name = "LCD_VCC_3.3V";
 	regulator-min-microvolt = <2800000>;
 	regulator-max-microvolt = <2800000>;
+};
+
+&pinctrl_0 {
+	camera_flash_host: camera-flash-host {
+		samsung,pins = "gpj1-0";
+		samsung,pin-function = <EXYNOS_PIN_FUNC_OUTPUT>;
+		samsung,pin-val = <0>;
+	};
+
+	camera_flash_isp: camera-flash-isp {
+		samsung,pins = "gpj1-0";
+		samsung,pin-function = <EXYNOS_PIN_FUNC_OUTPUT>;
+		samsung,pin-val = <1>;
+	};
 };
 
 &s5c73m3 {