lantiq: ARV752DPW: fix reboot loop caused by wrong GPIO setting

The GPIO buttons of ARV752DPW are active low.

Treating them as active high caused a reboot loop as a reset-button
press is detected by gpio-button-hotplug/gpio-keys-polled on startup.

This fixes: https://dev.openwrt.org/ticket/12642

Signed-off-by: Rafael Gieschke <rafael@gieschke.de>

SVN-Revision: 36783

target/linux/lantiq/dts/ARV752DPW.dts

@@ -153,17 +153,17 @@
 		};*/
 		restart {
 			label = "restart";
-			gpios = <&gpio 12 0>;
+			gpios = <&gpio 12 1>;
 			linux,code = <0x110>;
 		};
 		dsl {
 			label = "dsl";
-			gpios = <&gpio 13 0>;
+			gpios = <&gpio 13 1>;
 			linux,code = <0x111>;
 		};
 		reset {
 			label = "reset";
-			gpios = <&gpio 28 0>;
+			gpios = <&gpio 28 1>;
 			linux,code = <0x198>;
 		};
 	};