fbdev: msm: Avoid creation of extra retire timeline

Add support to avoid creation of extra timeline
for retire fences. Also, use the commit count
instead of pending commits for calculation of
value of release fence.

Change-Id: I07e4f68d89df7852d012b3a0508b76f51c29a511
Signed-off-by: Krishna Manikandan <mkrishn@codeaurora.org>