ARM: kirkwood: fix buttons on lsxl boards

Change event type to switch for the power and autopower switches.
Additionally, this patch aligns the keycodes with the other linkstation
boards already supported by linux.
Signed-off-by: Michael Walle <michael@walle.cc>
Signed-off-by: Jason Cooper <jason@lakedaemon.net>

arch/arm/boot/dts/kirkwood-lsxl.dtsi

@@ -48,17 +48,19 @@ gpio_keys {
 		#size-cells = <0>;
 		button@1 {
 			label = "Function Button";
-			linux,code = <132>;
+			linux,code = <357>;
 			gpios = <&gpio1 9 1>;
 		};
 		button@2 {
 			label = "Power-on Switch";
-			linux,code = <116>;
+			linux,code = <0>;
+			linux,input-type = <5>;
 			gpios = <&gpio1 10 1>;
 		};
 		button@3 {
 			label = "Power-auto Switch";
-			linux,code = <142>;
+			linux,code = <1>;
+			linux,input-type = <5>;
 			gpios = <&gpio1 11 1>;
 		};
 	};