arm64: dts: qcom: sm8150: simplify references to pwrkey and resin

Since commit d0a6ce59 ("arm64: dts: qcom: sm8150: Add support for
SONY Xperia 1 / 5 (Kumano platform)"), we can directly refer to pwrkey
and resin by their new labels, respectively pon_pwrkey and pon_resin.

Simplify microsof surface duo DTS by utilizing the new labels.
Signed-off-by: Felipe Balbi <felipe.balbi@microsoft.com>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Link: https://lore.kernel.org/r/20211217124546.1192281-1-balbi@kernel.org

arch/arm64/boot/dts/qcom/sm8150-microsoft-surface-duo.dts

@@ -430,18 +430,8 @@ &i2c19 {
 	/* MAX34417 @ 0x1e */
 };
 
-&pon {
-	pwrkey {
-		status = "okay";
-	};
-
-	resin {
-		compatible = "qcom,pm8941-resin";
-		interrupts = <0x0 0x8 0x1 IRQ_TYPE_EDGE_BOTH>;
-		debounce = <15625>;
-		bias-pull-up;
-		linux,code = <KEY_VOLUMEDOWN>;
-	};
+&pon_pwrkey {
+	status = "okay";
 };
 
 &qupv3_id_0 {
@@ -476,6 +466,12 @@ &remoteproc_slpi {
 	firmware-name = "qcom/sm8150/microsoft/slpi.mdt";
 };
 
+&pon_resin {
+	status = "okay";
+
+	linux,code = <KEY_VOLUMEDOWN>;
+};
+
 &tlmm {
 	gpio-reserved-ranges = <126 4>;