The DMA API is the recommended way to map pages no matter what the
underlying bus is. Use the DMA functions for page mapping and remove
currently existing wrappers.
Signed-off-by: NAlexandre Courbot <acourbot@nvidia.com>
Acked-by: NDaniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: NBen Skeggs <bskeggs@redhat.com>