msm: cpp: Increase the count of queued frames to HW to 2

CPP hardware can handle two request for process sent one after
another. We need to chnage the logic in CPP kernel driver to
support this option.

Change-Id: I4e0e47f839d5db79e42cb733fcf331ce59e65996
Signed-off-by: Iliya Varadzhakov <ivarad@codeaurora.org>
Signed-off-by: Rajakumar Govindaram <rajakuma@codeaurora.org>