arm: mx3: update defconfig

Activate watchdog, rtc, usb, usb-gadget, keypad, audio for broader test
coverage. Disable remote controls. Activate ARM errata as mentioned in [1].
Rest of changes is caused by version bump to 3.1-rc9.

[1] http://www.spinics.net/lists/arm-kernel/msg88710.html



Signed-off-by: Wolfram Sang <w.sang@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>