msm: camera: ope: Fix false alarm for OPE request timeout

In case of timeout, validate the timeout by checking the
time difference between last request and timeout.

CRs-Fixed: 2600977
Change-Id: I2668463cd4b2e8fbf0058e07316e9b6244973a3c
Signed-off-by: Rishabh Jain <risjai@codeaurora.org>