arm64: dts: allwinner: pinephone: add multicolor LED node

The red, green, and blue LEDs currently in the device tree represent a
single RGB LED on the front of the PinePhone.
Signed-off-by: Aren Moynihan <aren@peacevolution.org>
Acked-by: Jernej Skrabec <jernej.skrabec@gmail.com>
Link: https://lore.kernel.org/r/20240317004116.1473967-2-aren@peacevolution.orgSigned-off-by: Jernej Skrabec <jernej.skrabec@gmail.com>

arch/arm64/boot/dts/allwinner/sun50i-a64-pinephone.dtsi

@@ -39,21 +39,21 @@ chosen {
 	leds {
 		compatible = "gpio-leds";
 
-		led-0 {
+		led0: led-0 {
 			function = LED_FUNCTION_INDICATOR;
 			color = <LED_COLOR_ID_BLUE>;
 			gpios = <&pio 3 20 GPIO_ACTIVE_HIGH>; /* PD20 */
 			retain-state-suspended;
 		};
 
-		led-1 {
+		led1: led-1 {
 			function = LED_FUNCTION_INDICATOR;
 			color = <LED_COLOR_ID_GREEN>;
 			gpios = <&pio 3 18 GPIO_ACTIVE_HIGH>; /* PD18 */
 			retain-state-suspended;
 		};
 
-		led-2 {
+		led2: led-2 {
 			function = LED_FUNCTION_INDICATOR;
 			color = <LED_COLOR_ID_RED>;
 			gpios = <&pio 3 19 GPIO_ACTIVE_HIGH>; /* PD19 */
@@ -61,6 +61,13 @@ led-2 {
 		};
 	};
 
+	multi-led {
+		compatible = "leds-group-multicolor";
+		color = <LED_COLOR_ID_RGB>;
+		function = LED_FUNCTION_INDICATOR;
+		leds = <&led0>, <&led1>, <&led2>;
+	};
+
 	reg_ps: ps-regulator {
 		compatible = "regulator-fixed";
 		regulator-name = "ps";