ARM: dts: qcom: msm8974-klte: Add support for led

The klte uses a Panasonic AN30259A LED controller for it's indicator
led.
Signed-off-by: Iskren Chernev <iskren.chernev@gmail.com>
Link: https://lore.kernel.org/r/20200920144859.813032-5-iskren.chernev@gmail.comSigned-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>

arch/arm/boot/dts/qcom-msm8974-samsung-klte.dts

@@ -4,6 +4,7 @@
 #include <dt-bindings/gpio/gpio.h>
 #include <dt-bindings/input/input.h>
 #include <dt-bindings/pinctrl/qcom,pmic-gpio.h>
+#include <dt-bindings/leds/common.h>
 
 / {
 	model = "Samsung Galaxy S5";
@@ -228,6 +229,44 @@ touchkey@20 {
 		};
 	};
 
+	i2c-gpio-led {
+		compatible = "i2c-gpio";
+		#address-cells = <1>;
+		#size-cells = <0>;
+		scl-gpios = <&msmgpio 121 (GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN)>;
+		sda-gpios = <&msmgpio 120 (GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN)>;
+		pinctrl-names = "default";
+		pinctrl-0 = <&i2c_led_pins>;
+
+		i2c-gpio,delay-us = <2>;
+
+		led-controller@30 {
+			compatible = "panasonic,an30259a";
+			reg = <0x30>;
+
+			#address-cells = <1>;
+			#size-cells = <0>;
+
+			led@1 {
+				reg = <1>;
+				function = LED_FUNCTION_STATUS;
+				color = <LED_COLOR_ID_RED>;
+			};
+
+			led@2 {
+				reg = <2>;
+				function = LED_FUNCTION_STATUS;
+				color = <LED_COLOR_ID_GREEN>;
+			};
+
+			led@3 {
+				reg = <3>;
+				function = LED_FUNCTION_STATUS;
+				color = <LED_COLOR_ID_BLUE>;
+			};
+		};
+	};
+
 	/delete-node/ vreg-boost;
 };
 
@@ -312,6 +351,15 @@ mux {
 				bias-pull-up;
 			};
 		};
+
+		i2c_led_pins: i2c-led {
+			mux {
+				pins = "gpio120", "gpio121";
+				function = "gpio";
+				input-enable;
+				bias-pull-down;
+			};
+		};
 	};
 
 	sdhci@f9824900 {