arm64: dts: rockchip: add infrared receiver node to RK3399 Firefly

This adds the RK3399 Firefly’s infrared receiver to its dts.
Signed-off-by: Peter Robinson <pbrobinson@gmail.com>
Link: https://lore.kernel.org/r/20210613215237.830160-2-pbrobinson@gmail.comSigned-off-by: Heiko Stuebner <heiko@sntech.de>

arch/arm64/boot/dts/rockchip/rk3399-firefly.dts

@@ -94,6 +94,13 @@ power {
 		};
 	};
 
+	ir-receiver {
+		compatible = "gpio-ir-receiver";
+		gpios = <&gpio0 RK_PA6 GPIO_ACTIVE_LOW>;
+		pinctrl-0 = <&ir_int>;
+		pinctrl-names = "default";
+	};
+
 	leds {
 		compatible = "gpio-leds";
 		pinctrl-names = "default";
@@ -595,6 +602,12 @@ pwrbtn: pwrbtn {
 		};
 	};
 
+	ir {
+		ir_int: ir-int {
+			rockchip,pins = <0 RK_PA6 RK_FUNC_GPIO &pcfg_pull_none>;
+		};
+	};
+
 	lcd-panel {
 		lcd_panel_reset: lcd-panel-reset {
 			rockchip,pins = <4 RK_PD6 RK_FUNC_GPIO &pcfg_pull_up>;