linux-phytec-fsl

MLK-11530-04 dmaengine: imx-sdma: add hdmi audio support

No need to alloc bd for hdmi audio, and the period len of hdmi audio is
0, so add constraint for it.

And correct per_address and per_address2 for hdmi audio.

Signed-off-by: Zidan Wang <zidan.wang@freescale.com>