sound-soc: move to dma_transfer_direction

fixup usage of dma direction by introducing dma_transfer_direction,
this patch moves asoc drivers to use new enum

Signed-off-by: Vinod Koul <[email protected]>
Cc: Liam Girdwood <[email protected]>
Cc: Mark Brown <[email protected]>
Acked-by: Mark Brown <[email protected]>
7 files changed