arm64: dts: qcom: Move WLED num-strings from pmi8994 to sony-xperia-tone

The number of WLED strings used by a certain platform depend on the
panel connected to that board and may not be the same for every user of
pmi8994.
Signed-off-by: Marijn Suijten <marijn.suijten@somainline.org>
Reviewed-By: AngeloGioacchino Del Regno <angelogioacchino.delregno@somainline.org>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Link: https://lore.kernel.org/r/20211007213400.258371-13-marijn.suijten@somainline.org

arch/arm64/boot/dts/qcom/msm8996-sony-xperia-tone.dtsi

@@ -620,6 +620,7 @@ pmi8994_s11: s11 {
 &pmi8994_wled {
 	status = "okay";
 	default-brightness = <512>;
+	qcom,num-strings = <3>;
 };
 
 &rpm_requests {

arch/arm64/boot/dts/qcom/pmi8994.dtsi

@@ -38,7 +38,6 @@ pmi8994_wled: wled@d800 {
 			reg = <0xd800 0xd900>;
 			interrupts = <3 0xd8 0x02 IRQ_TYPE_EDGE_RISING>;
 			interrupt-names = "short";
-			qcom,num-strings = <3>;
 			qcom,cabc;
 			qcom,external-pfet;
 			status = "disabled";