ARM: at91/defconfig: add QT1070 to at91_dt

As this touch button driver is used on at91sam9x5ek, it's better to enable it.
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>

arch/arm/configs/at91_dt_defconfig

@@ -113,6 +113,7 @@ CONFIG_INPUT_MOUSEDEV_SCREEN_Y=272
 CONFIG_INPUT_JOYDEV=y
 CONFIG_INPUT_EVDEV=y
 # CONFIG_KEYBOARD_ATKBD is not set
+CONFIG_KEYBOARD_QT1070=y
 CONFIG_KEYBOARD_GPIO=y
 # CONFIG_INPUT_MOUSE is not set
 CONFIG_INPUT_TOUCHSCREEN=y