arm64: dts: qcom: sdm845-mtp: enable Vol-/reset button

Wire up the Vol- / reset button on Qualcomm SDM845 MTP board.
Reviewed-by: Konrad Dybcio <konrad.dybcio@linaro.org>
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Link: https://lore.kernel.org/r/20230826221915.846937-5-dmitry.baryshkov@linaro.orgSigned-off-by: Bjorn Andersson <andersson@kernel.org>

arch/arm64/boot/dts/qcom/sdm845-mtp.dts

@@ -609,6 +609,11 @@ quiet-thermistor@4 {
 	};
 };
 
+&pm8998_resin {
+	linux,code = <KEY_VOLUMEDOWN>;
+	status = "okay";
+};
+
 &qupv3_id_1 {
 	status = "okay";
 };