ARM: dts: imx28/imx53: enable edt-ft5x06 wakeup source

The touchscreen driver no longer configures the device as wakeup source by
default. A "wakeup-source" property is needed.

To avoid regressions, this patch changes the DTS files for the only two
users of this driver that didn't have this property yet.

Signed-off-by: Daniel Mack <[e-mail]>
Cc: Sascha Hauer <[e-mail]>
Cc: Fabio Estevam <[e-mail]>
Cc: Rob Herring <[e-mail]>
Signed-off-by: Shawn Guo <[e-mail]>

arch/arm/boot/dts/imx28-tx28.dts

···
 		interrupts = <5 IRQ_TYPE_EDGE_FALLING>;
 		reset-gpios = <&gpio2 6 GPIO_ACTIVE_LOW>;
 		wake-gpios = <&gpio4 9 GPIO_ACTIVE_HIGH>;
+		wakeup-source;
 	};
 
 	touchscreen: tsc2007@48 {

arch/arm/boot/dts/imx53-tx53-x03x.dts

···
 		interrupts = <15 IRQ_TYPE_EDGE_FALLING>;
 		reset-gpios = <&gpio2 22 GPIO_ACTIVE_LOW>;
 		wake-gpios = <&gpio2 21 GPIO_ACTIVE_HIGH>;
+		wakeup-source;
 	};
 
 	touchscreen: tsc2007@48 {