Here are the modification to at91sam9261 files dedicated to the support of
at91sam9g10. This direction has been adopted to minimize code duplication.
All at91sam9261 drivers are enabled in _devices and board files. Modificaton
to peripherals that support at91sam9g10 will be added in future patches.
Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>