arm64: dts: qcom: pm8150b: add Light Pulse Generator device node

Add device node defining LPG/PWM block on PM8150B PMIC chip.
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Link: https://lore.kernel.org/r/20220505145102.1432670-2-dmitry.baryshkov@linaro.org

arch/arm64/boot/dts/qcom/pm8150b.dtsi

@@ -127,5 +127,15 @@ pmic@3 {
 		reg = <0x3 SPMI_USID>;
 		#address-cells = <1>;
 		#size-cells = <0>;
+
+		pm8150b_lpg: lpg {
+			compatible = "qcom,pm8150b-lpg";
+
+			#address-cells = <1>;
+			#size-cells = <0>;
+			#pwm-cells = <2>;
+
+			status = "disabled";
+		};
 	};
 };