Each CCP queue can product interrupts for 4 conditions:
operation complete, queue empty, error, and queue stopped.
This driver only works with completion and error events.

Cc: <stable@vger.kernel.org> # 4.9.x+
Signed-off-by: NGary R Hook <gary.hook@amd.com>
Signed-off-by: NHerbert Xu <herbert@gondor.apana.org.au>