Fixed fsl dma slow issue by initializing dma mode register with
bandwidth control. It boosts dma performance and should works
with 85xx board.
Signed-off-by: NForrest Shi <b29237@freescale.com>
Signed-off-by: NLi Yang <leoli@freescale.com>
Signed-off-by: NDan Williams <dan.j.williams@intel.com>