arm64: dts: mt2712: add pintcrl device node.

This patch adds pintcrl device node for mt2712.
Signed-off-by: Zhiyong Tao <zhiyong.tao@mediatek.com>
Signed-off-by: Matthias Brugger <matthias.bgg@gmail.com>

arch/arm64/boot/dts/mediatek/mt2712e.dtsi

@@ -9,6 +9,7 @@
 #include <dt-bindings/interrupt-controller/irq.h>
 #include <dt-bindings/interrupt-controller/arm-gic.h>
 #include <dt-bindings/power/mt2712-power.h>
+#include "mt2712-pinfunc.h"
 
 / {
 	compatible = "mediatek,mt2712";
@@ -258,6 +259,23 @@ pericfg: syscon@10003000 {
 		#clock-cells = <1>;
 	};
 
+	syscfg_pctl_a: syscfg_pctl_a@10005000 {
+		compatible = "mediatek,mt2712-pctl-a-syscfg", "syscon";
+		reg = <0 0x10005000 0 0x1000>;
+	};
+
+	pio: pinctrl@10005000 {
+		compatible = "mediatek,mt2712-pinctrl";
+		reg = <0 0x1000b000 0 0x1000>;
+		mediatek,pctl-regmap = <&syscfg_pctl_a>;
+		pins-are-numbered;
+		gpio-controller;
+		#gpio-cells = <2>;
+		interrupt-controller;
+		#interrupt-cells = <2>;
+		interrupts = <GIC_SPI 153 IRQ_TYPE_LEVEL_HIGH>;
+	};
+
 	scpsys: scpsys@10006000 {
 		compatible = "mediatek,mt2712-scpsys", "syscon";
 		#power-domain-cells = <1>;