arm64: dts: qcom: sm7225-fairphone-fp4: Configure WLED

WLED is used for controlling the display backlight on this phone, so
configure the node and enable it.
Signed-off-by: Luca Weiss <luca.weiss@fairphone.com>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Link: https://lore.kernel.org/r/20211229170358.2457006-5-luca.weiss@fairphone.com

arch/arm64/boot/dts/qcom/sm7225-fairphone-fp4.dts

@@ -10,6 +10,7 @@
 #include <dt-bindings/pinctrl/qcom,pmic-gpio.h>
 #include <dt-bindings/regulator/qcom,rpmh-regulator.h>
 #include "sm7225.dtsi"
+#include "pm6150l.dtsi"
 #include "pm6350.dtsi"
 
 / {
@@ -300,6 +301,14 @@ &mpss {
 	firmware-name = "qcom/sm7225/fairphone4/modem.mdt";
 };
 
+&pm6150l_wled {
+	status = "okay";
+
+	qcom,switching-freq = <800>;
+	qcom,current-limit-microamp = <20000>;
+	qcom,num-strings = <2>;
+};
+
 &pm6350_gpios {
 	gpio_keys_pin: gpio-keys-pin {
 		pins = "gpio2";