arm64: dts: qcom: sm6115-pro1x: fix incorrect gpio-key,wakeup

Use 'wakeup-source' instead of 'gpio-key,wakeup' to indicate key can
wake-up the device:

  sm6115-fxtec-pro1x.dtb: gpio-keys: key-volume-up: Unevaluated properties are not allowed ('gpio-key,wakeup' was unexpected)
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Reviewed-by: Konrad Dybcio <konrad.dybcio@linaro.org>
Link: https://lore.kernel.org/r/20230617171541.286957-15-krzysztof.kozlowski@linaro.orgSigned-off-by: Bjorn Andersson <andersson@kernel.org>

arch/arm64/boot/dts/qcom/sm6115-fxtec-pro1x.dts

@@ -44,7 +44,7 @@ key-volume-up {
 			gpios = <&pm6125_gpios 5 GPIO_ACTIVE_LOW>;
 			debounce-interval = <15>;
 			linux,can-disable;
-			gpio-key,wakeup;
+			wakeup-source;
 		};
 	};
 };