arm/tegra: Seaboard: Add GPIO key device tree nodes

This brings all the GPIO key definitions from board-seaboard.c into
tegra-seaboard.dtsi.
Signed-off-by: NStephen Warren <swarren@nvidia.com>
Signed-off-by: NOlof Johansson <olof@lixom.net>

arch/arm/boot/dts/tegra-seaboard.dts

@@ -73,4 +73,24 @@
 	usb@c5000000 {
 		nvidia,vbus-gpio = <&gpio 24 0>; /* PD0 */
 	};
+
+	gpio-keys {
+		compatible = "gpio-keys";
+
+		power {
+			label = "Power";
+			gpios = <&gpio 170 1>; /* gpio PV2, active low */
+			linux,code = <116>; /* KEY_POWER */
+			gpio-key,wakeup;
+		};
+
+		lid {
+			label = "Lid";
+			gpios = <&gpio 23 0>; /* gpio PC7 */
+			linux,input-type = <5>; /* EV_SW */
+			linux,code = <0>; /* SW_LID */
+			debounce-interval = <1>;
+			gpio-key,wakeup;
+		};
+	};
 };