ACP IP has internal DMA controller with multiple channels which
can be programmed in cyclic/non cyclic manner. ACP can generate
interrupt upon completion of DMA transfer, if required.
The PCM driver provides the platform DMA component to ALSA core.

Signed-off-by: Maruthi Bayyavarapu
Reviewed-by: Alex Deucher
Reviewed-by: Murali Krishna Vemuri
Signed-off-by: Alex Deucher
Signed-off-by: Mark Brown