arm64: dts: qcom: sm8550-qrd: add notification RGB LED

The QRD features a notification LED connected to the pm8550.
Configure the RGB led controlled by the PMIC PWM controller.
Reviewed-by: Konrad Dybcio <konrad.dybcio@linaro.org>
Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
Signed-off-by: Bjorn Andersson <andersson@kernel.org>
Link: https://lore.kernel.org/r/20230525-topic-sm8550-upstream-pm8550-lpg-dt-v4-2-a288f24af81b@linaro.org

arch/arm64/boot/dts/qcom/sm8550-qrd.dts

@@ -516,6 +516,33 @@ led-1 {
 	};
 };
 
+&pm8550_pwm {
+	status = "okay";
+
+	multi-led {
+		color = <LED_COLOR_ID_RGB>;
+		function = LED_FUNCTION_STATUS;
+
+		#address-cells = <1>;
+		#size-cells = <0>;
+
+		led@1 {
+			reg = <1>;
+			color = <LED_COLOR_ID_RED>;
+		};
+
+		led@2 {
+			reg = <2>;
+			color = <LED_COLOR_ID_GREEN>;
+		};
+
+		led@3 {
+			reg = <3>;
+			color = <LED_COLOR_ID_BLUE>;
+		};
+	};
+};
+
 &pm8550b_eusb2_repeater {
 	vdd18-supply = <&vreg_l15b_1p8>;
 	vdd3-supply = <&vreg_l5b_3p1>;