dmaengine: Remove net_dma leftovers
dmaengine: Remove net_dma leftovers

Commit 7bce d397 510a ("net_dma: simple removal") removed the net_dma support
entirely but left some functions and prototypes in the dmaengine header.
Remove them.

Signed-off-by: Maxime Ripard <2d324f4ca95610bde432fa2af2f28cd21110687d@free-electrons.com>
Signed-off-by: Vinod Koul <5cf69c63beb17bf38d63aa0e923ee8256af0e205@intel.com>

KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs