[ARM] 5058/1: [AT91] Calao Systems - default configs

Default config files for the three AT91-based boards available from
Calao Systems: USB_A9260, USB_A9263 and QIL_A9260.

Signed-off-by: Grégory Hermant <gregory.hermant@calao-systems.com>
Signed-off-by: Andrew Victor <linux@maxim.org.za>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>