Needed for future use with dmaengine enabled driver.
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
[wenyou.yang@atmel.com: submit the patch] Signed-off-by: Wenyou Yang <wenyou.yang@atmel.com> Tested-by: Richard Genoud <richard.genoud@gmail.com> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>