ARM: dts: imx53-qsb: Do not use GPIO1_8 as wakeup source

On the mx53qsb board with mc34708 PMIC, GPIO1_8 resets the system, so better not
to use it as a wakeup source.

Use GPIO 2_14 and 2_15 for wakeup sources instead.
Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>

arch/arm/boot/dts/imx53-qsb.dts

@@ -55,19 +55,20 @@ power {
 			label = "Power Button";
 			gpios = <&gpio1 8 0>;
 			linux,code = <116>; /* KEY_POWER */
-			gpio-key,wakeup;
 		};
 
 		volume-up {
 			label = "Volume Up";
 			gpios = <&gpio2 14 0>;
 			linux,code = <115>; /* KEY_VOLUMEUP */
+			gpio-key,wakeup;
 		};
 
 		volume-down {
 			label = "Volume Down";
 			gpios = <&gpio2 15 0>;
 			linux,code = <114>; /* KEY_VOLUMEDOWN */
+			gpio-key,wakeup;
 		};
 	};