Allow to compile the driver all the time if AT91 enabled.
Signed-off-by: NJean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Acked-by: NFelipe Balbi <balbi@ti.com>
Acked-by: NNicolas Ferre <nicolas.ferre@atmel.com>
Tested-by: NBo Shen <voice.shen@atmel.com>