Set DMA direction to TO_DEVICE for Tx completions

This avoids unnecessary cache invalidations for empty buffers

CRs-Fixed: 736346
Change-Id: Ib3d55c8aefcafae4614952af66f80c7960b04e9d
Signed-off-by: Pamidipati, Vijay <vpamidip@codeaurora.org>
1 file changed