For devices where the CP FW supports asynchronous scratch reclaim, ROCr
is able to claw-back scratch memory that was assigned to an AQL queue.
With that ability, ROCr does not have to rely on using USO
(use-scratch-once) when assigning large amounts of memory to a queue.
If we reach a situation where we are running low on device memory, ROCr
will attempt to claw-back the scratch memory.
Change-Id: Iddf8ec84e37ab8b9fdc58bafbe2b61fe2acb6eb7
David Yat Sin
dca8f3a21d