msm: mdss: trigger frame timeout when recovery is in progress

MDSS software should trigger frame timeout when command mode
interface recovery is in progress. After this new place for
event, there is a small window where wait4pingpong and recovery
path both can trigger this event. Use atomic_add_unless api
instead of read and dec so that it would add protection and
avoids timeline update multiple times for same frame update.

Change-Id: I412c6341ac4d547acde914409481e9b57b2b88f2
Signed-off-by: Dhaval Patel <pdhaval@codeaurora.org>