arm64: dts: rockchip: add status LED to rock-5b

Describe the Rock 5B status LED in its device tree.

Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
Link: https://lore.kernel.org/r/20231005134037.33231-1-sebastian.reichel@collabora.com
Signed-off-by: Heiko Stuebner <heiko@sntech.de>

arch/arm64/boot/dts/rockchip/rk3588-rock-5b.dts

@@ -3,6 +3,7 @@
 /dts-v1/;
 
 #include <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/leds/common.h>
 #include "rk3588.dtsi"
 
 / {
@@ -37,6 +38,19 @@
 		pinctrl-0 = <&hp_detect>;
 	};
 
+	leds {
+		compatible = "gpio-leds";
+		pinctrl-names = "default";
+		pinctrl-0 = <&led_rgb_b>;
+
+		led_rgb_b {
+			function = LED_FUNCTION_STATUS;
+			color = <LED_COLOR_ID_BLUE>;
+			gpios = <&gpio0 RK_PB7 GPIO_ACTIVE_HIGH>;
+			linux,default-trigger = "heartbeat";
+		};
+	};
+
 	fan: pwm-fan {
 		compatible = "pwm-fan";
 		cooling-levels = <0 95 145 195 255>;
@@ -285,6 +299,12 @@
 		};
 	};
 
+	leds {
+		led_rgb_b: led-rgb-b {
+			rockchip,pins = <0 RK_PB7 RK_FUNC_GPIO &pcfg_pull_none>;
+		};
+	};
+
 	sound {
 		hp_detect: hp-detect {
 			rockchip,pins = <1 RK_PD5 RK_FUNC_GPIO &pcfg_pull_none>;