arm64: dts: mt7622: add EINT support to pinctrl

Add EINT support to pinctrl and set those GPIO keys as interrupt-driven
keys.
Signed-off-by: Sean Wang <sean.wang@mediatek.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Matthias Brugger <matthias.bgg@gmail.com>

arch/arm64/boot/dts/mediatek/mt7622-rfb1.dts

@@ -34,7 +34,7 @@ cpu@1 {
 	};
 
 	gpio-keys {
-		compatible = "gpio-keys-polled";
+		compatible = "gpio-keys";
 		poll-interval = <100>;
 
 		factory {

arch/arm64/boot/dts/mediatek/mt7622.dtsi

@@ -286,9 +286,15 @@ rng: rng@1020f000 {
 
 	pio: pinctrl@10211000 {
 		compatible = "mediatek,mt7622-pinctrl";
-		reg = <0 0x10211000 0 0x1000>;
+		reg = <0 0x10211000 0 0x1000>,
+		      <0 0x10005000 0 0x1000>;
+		reg-names = "base", "eint";
 		gpio-controller;
 		#gpio-cells = <2>;
+		interrupt-controller;
+		interrupts = <GIC_SPI 153 IRQ_TYPE_LEVEL_HIGH>;
+		interrupt-parent = <&gic>;
+		#interrupt-cells = <2>;
 	};
 
 	watchdog: watchdog@10212000 {