fixup usage of dma direction by introducing dma_transfer_direction,
this patch moves carma drivers to use new enum
Signed-off-by: NVinod Koul <vinod.koul@linux.intel.com>
CC Ira W. Snyder <iws@ovro.caltech.edu>

This adds support for programming the data processing FPGAs on the OVRO
CARMA board. These FPGAs have a special programming sequence that
requires that we program the Freescale DMA engine, which is only
available inside the kernel.
Signed-off-by: NIra W. Snyder <iws@ovro.caltech.edu>
Signed-off-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org>