media, video: move to dma_transfer_direction
fixup usage of dma direction by introducing dma_transfer_direction, this patch moves media and video drivers to use new enum Cc: Mauro Carvalho Chehab <mchehab@infradead.org> Cc: Paul Mundt <lethal@linux-sh.org> Cc: Guennadi Liakhovetski <g.liakhovetski@gmx.de> Acked-by: NGuennadi Liakhovetski <g.liakhovetski@gmx.de> Acked-by: NGuennadi Liakhovetski <g.liakhovetski@gmx.de> Signed-off-by: NVinod Koul <vinod.koul@linux.intel.com>
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