ARM: dts: rockchip: add gpio power-key for rk3229-evb

This patch adds gpio power-key support for rk3229-evb board.
Signed-off-by: Frank Wang <frank.wang@rock-chips.com>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>

arch/arm/boot/dts/rk3229-evb.dts

@@ -40,6 +40,7 @@
 
 /dts-v1/;
 
+#include <dt-bindings/input/input.h>
 #include "rk3229.dtsi"
 
 / {
@@ -139,6 +140,21 @@ vdd_log: vdd-log-regulator {
 		regulator-always-on;
 		regulator-boot-on;
 	};
+
+	gpio_keys {
+		compatible = "gpio-keys";
+		autorepeat;
+		pinctrl-names = "default";
+		pinctrl-0 = <&pwr_key>;
+
+		power_key: power-key {
+			label = "GPIO Key Power";
+			gpios = <&gpio3 23 GPIO_ACTIVE_LOW>;
+			linux,code = <KEY_POWER>;
+			debounce-interval = <100>;
+			wakeup-source;
+		};
+	};
 };
 
 &cpu0 {
@@ -189,6 +205,12 @@ &io_domains {
 };
 
 &pinctrl {
+	keys {
+		pwr_key: pwr-key {
+			rockchip,pins = <3 RK_PC7 RK_FUNC_GPIO &pcfg_pull_up>;
+		};
+	};
+
 	usb {
 		host_vbus_drv: host-vbus-drv {
 			rockchip,pins = <3 RK_PC4 RK_FUNC_GPIO &pcfg_pull_none>;