arm64: dts: rockchip: Add Hugsun X99 IR receiver

Add the IR receiver and its associated pinctrl entry.

Tested with LibreElec linux-next-20200305
Signed-off-by: Vivek Unune <npcomplete13@gmail.com>
Link: https://lore.kernel.org/r/20200313230513.123049-1-npcomplete13@gmail.comSigned-off-by: Heiko Stuebner <heiko@sntech.de>

arch/arm64/boot/dts/rockchip/rk3399-hugsun-x99.dts

@@ -29,6 +29,13 @@ dc_5v: dc-5v {
 		regulator-max-microvolt = <5000000>;
 	};
 
+	ir-receiver {
+		compatible = "gpio-ir-receiver";
+		gpios = <&gpio0 RK_PA6 GPIO_ACTIVE_LOW>;
+		pinctrl-names = "default";
+		pinctrl-0 = <&ir_rx>;
+	};
+
 	vcc_sys: vcc-sys {
 		compatible = "regulator-fixed";
 		regulator-name = "vcc_sys";
@@ -483,6 +490,12 @@ rgmii_sleep_pins: rgmii-sleep-pins {
 		};
 	};
 
+	ir {
+		ir_rx: ir-rx {
+			rockchip,pins = <0 RK_PA6 1 &pcfg_pull_none>;
+		};
+	};
+
 	pmic {
 		pmic_int_l: pmic-int-l {
 			rockchip,pins =