arm64: dts: qcom: qrb5165-rb5: enabled pwrkey and resin nodes

Enable powerkey and resin nodes to let the board handle POWER and
Volume- keys properly.
Signed-off-by: NDmitry Baryshkov <dmitry.baryshkov@linaro.org>
Tested-by: NAmit Pundir <amit.pundir@linaro.org>
Signed-off-by: NBjorn Andersson <bjorn.andersson@linaro.org>
Link: https://lore.kernel.org/r/20210916151341.1797512-3-dmitry.baryshkov@linaro.org

arch/arm64/boot/dts/qcom/qrb5165-rb5.dts

@@ -804,6 +804,16 @@
 	};
 };
 
+&pon_pwrkey {
+	status = "okay";
+};
+
+&pon_resin {
+	status = "okay";
+
+	linux,code = <KEY_VOLUMEDOWN>;
+};
+
 &qupv3_id_0 {
 	status = "okay";
 };