arm64: dts: qcom: msm8916-motorola-osprey: Add backlight control

Based on motorola-surnia, the only changes being:
 - Using LED2 instead of LED1 for the led driver
 - Using GPIO 113 for the backlight reset

Signed-off-by: Bogdan Ionescu <bogdan.ionescu.work@gmail.com>

arch/arm64/boot/dts/qcom/msm8916-motorola-osprey.dts

@@ -9,6 +9,8 @@
 #include <dt-bindings/input/input.h>
 #include <dt-bindings/interrupt-controller/irq.h>
 #include <dt-bindings/pinctrl/qcom,pmic-gpio.h>
+#include <dt-bindings/leds/common.h>
+#include <dt-bindings/leds/leds-bd65b60.h>
 
 / {
 	model = "Motorola Moto G 2015 (osprey)";
@@ -80,6 +82,12 @@
 		startup-delay-us = <300>;
 		vin-supply = <&pm8916_l16>;
 	};
+
+	backlight: backlight {
+		compatible = "led-backlight";
+		leds = <&backlight_led>;
+		default-brightness-level = <192>;
+	};
 };
 
 &blsp_i2c1 {
@@ -125,6 +133,21 @@
 			regulator-active-discharge = <1>;
 		};
 	};
+
+	led-controler@64 {
+		compatible = "rohm,bd65b60";
+		reg = <0x64>;
+		pinctrl-0 = <&backlight_reset_default>;
+		pinctrl-names = "default";
+
+		backlight_led: led {
+			function = LED_FUNCTION_BACKLIGHT;
+			color = <LED_COLOR_ID_WHITE>;
+			rohm,enable-outputs = <BD65B60_ENABLE_LED2>;
+			default-state = "keep";
+			linux,default-trigger = "backlight";
+		};
+	};
 };
 
 &blsp_i2c2 {
@@ -172,6 +195,7 @@
 		compatible = "motorola,osprey-panel";
 		reg = <0>;
 
+		backlight = <&backlight>;
 		vsp-supply = <&reg_lcd_pos>;
 		vsn-supply = <&reg_lcd_neg>;
 		vddio-supply = <&reg_panel_vddio>;
@@ -370,6 +394,14 @@
 		bias-pull-up;
 	};
 
+	backlight_reset_default: backlight-reset-default-state {
+		pins = "gpio113";
+		function = "gpio";
+		drive-strength = <2>;
+		bias-pull-down;
+		output-high;
+	};
+
 	gpio_keys_default: gpio-keys-default-state {
 		pins = "gpio107";
 		function = "gpio";