ARM: dts: rockchip: Add IR receiver to RK3288 Radxa Rock 2 Square

Add support for the IR receiver as present on the Radxa Rock 2 Square
board.
Signed-off-by: Sjoerd Simons <sjoerd.simons@collabora.co.uk>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>

arch/arm/boot/dts/rk3288-rock2-square.dts

@@ -49,6 +49,13 @@ chosen {
 		stdout-path = "serial2:115200n8";
 	};
 
+	ir: ir-receiver {
+		compatible = "gpio-ir-receiver";
+		gpios = <&gpio8 1 GPIO_ACTIVE_LOW>;
+		pinctrl-names = "default";
+		pinctrl-0 = <&ir_int>;
+	};
+
 	sound {
 		compatible = "simple-audio-card";
 		simple-audio-card,name = "SPDIF";
@@ -131,6 +138,12 @@ &i2c5 {
 };
 
 &pinctrl {
+	ir {
+		ir_int: ir-int {
+			rockchip,pins = <8 1 RK_FUNC_GPIO &pcfg_pull_up>;
+		};
+	};
+
 	pmic {
 		pmic_int: pmic-int {
 			rockchip,pins = <0 4 RK_FUNC_GPIO &pcfg_pull_up>;