Revert "videobuf2-dma-contig: Only support if HAVE_GENERIC_DMA_COHERENT"

The right solution is to remove the architecture dependency on
dma_common_get_sgtable(). Revert this patch to apply the right one.

This reverts commit 93049b9368a2e257ace66252ab2cc066f3399cad.
1 file changed