arm64: dts: qcom: sdm660-xiaomi-lavender: Configure WLED

WLED is used for controlling display backlight on this phone.
Signed-off-by: Dang Huynh <danct12@riseup.net>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Link: https://lore.kernel.org/r/20220425032824.211975-1-danct12@riseup.net

arch/arm64/boot/dts/qcom/sdm660-xiaomi-lavender.dts

@@ -363,6 +363,14 @@ vreg_l19a_3p3: l19 {
 	};
 };
 
+&pm660l_wled {
+	status = "okay";
+
+	qcom,switching-freq = <800>;
+	qcom,current-limit-microamp = <20000>;
+	qcom,num-strings = <2>;
+};
+
 &sdhc_1 {
 	status = "okay";
 	supports-cqe;