[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: NGrégory Hermant <gregory.hermant@calao-systems.com>
Signed-off-by: NAndrew Victor <linux@maxim.org.za>
Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>