arm64: dts: qcom: msm8939-longcheer-l9100: Add proximity-near-level

Consider an object near to the sensor when their distance is about 4 cm
or below.
Reviewed-by: Konrad Dybcio <konrad.dybcio@linaro.org>
Signed-off-by: André Apitzsch <git@apitzsch.eu>
Link: https://lore.kernel.org/r/20231126-bqm5_prox-v2-1-b7defc3979ac@apitzsch.euSigned-off-by: Bjorn Andersson <andersson@kernel.org>

arch/arm64/boot/dts/qcom/msm8939-longcheer-l9100.dts

@@ -180,6 +180,7 @@ magnetometer@d {
 	light-sensor@23 {
 		compatible = "liteon,ltr559";
 		reg = <0x23>;
+		proximity-near-level = <75>;
 
 		vdd-supply = <&pm8916_l17>;
 		vddio-supply = <&pm8916_l5>;