arm64: dts: rockchip: Add LED_GREEN for edgeble-neu6a

Edgeble NCM6A, NCM6B SoM has Green LED on the module.

Enable them with heartbeat function.
Signed-off-by: Jagan Teki <jagan@edgeble.ai>
Link: https://lore.kernel.org/r/20231125190522.87607-11-jagan@edgeble.aiSigned-off-by: Heiko Stuebner <heiko@sntech.de>

arch/arm64/boot/dts/rockchip/rk3588-edgeble-neu6a-common.dtsi

@@ -3,11 +3,27 @@
  * Copyright (c) 2023 Edgeble AI Technologies Pvt. Ltd.
  */
 
+#include <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/leds/common.h>
+
 / {
 	aliases {
 		mmc0 = &sdhci;
 	};
 
+	gpio-leds {
+		compatible = "gpio-leds";
+
+		led_user: led-0 {
+			color = <LED_COLOR_ID_GREEN>;
+			function = LED_FUNCTION_HEARTBEAT;
+			gpios = <&gpio0 RK_PC2 GPIO_ACTIVE_HIGH>;
+			linux,default-trigger = "heartbeat";
+			pinctrl-names = "default";
+			pinctrl-0 = <&led_user_en>;
+		};
+	};
+
 	vcc12v_dcin: vcc12v-dcin-regulator {
 		compatible = "regulator-fixed";
 		regulator-name = "vcc12v_dcin";
@@ -110,6 +126,14 @@ regulator-state-mem {
 	};
 };
 
+&pinctrl {
+	leds {
+		led_user_en: led_user_en {
+			rockchip,pins = <0 RK_PC2 RK_FUNC_GPIO &pcfg_pull_none>;
+		};
+	};
+};
+
 &sdhci {
 	bus-width = <8>;
 	no-sdio;