ARM: dts: tps65217: Add the power button device

Support the power button driver and disable it by default.
Signed-off-by: Milo Kim <woogyom.kim@gmail.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>

arch/arm/boot/dts/tps65217.dtsi

@@ -21,6 +21,11 @@ charger {
 		status = "disabled";
 	};
 
+	pwrbutton {
+		compatible = "ti,tps65217-pwrbutton";
+		status = "disabled";
+	};
+
 	regulators {
 		#address-cells = <1>;
 		#size-cells = <0>;