arm64: dts: mediatek: mt8173: correct GPIO keys wakeup

gpio-keys,wakeup is a deprecated property.

Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/20230304123301.33952-1-krzysztof.kozlowski@linaro.org
Signed-off-by: Matthias Brugger <matthias.bgg@gmail.com>

Author: krzk

arch/arm64/boot/dts/mediatek/mt8173-elm.dtsi

@@ -58,23 +58,23 @@
 			gpios = <&pio 69 GPIO_ACTIVE_LOW>;
 			linux,code = <SW_LID>;
 			linux,input-type = <EV_SW>;
-			gpio-key,wakeup;
+			wakeup-source;
 		};
 
 		switch-power {
 			label = "Power";
 			gpios = <&pio 14 GPIO_ACTIVE_HIGH>;
 			linux,code = <KEY_POWER>;
 			debounce-interval = <30>;
-			gpio-key,wakeup;
+			wakeup-source;
 		};
 
 		switch-tablet-mode {
 			label = "Tablet_mode";
 			gpios = <&pio 121 GPIO_ACTIVE_HIGH>;
 			linux,code = <SW_TABLET_MODE>;
 			linux,input-type = <EV_SW>;
-			gpio-key,wakeup;
+			wakeup-source;
 		};
 
 		switch-volume-down {