msm_fb: display: Send current timestamp in case of timeout

On timeout while waiting for the vsync, send the current
timestamp to the userspace. This resolves the infinite
wait seen during the bootup.

Signed-off-by: Siddhartha Agrawal <agrawals@codeaurora.org>
Change-Id: I0d7b8750becfbb4e5c5e47b29ded6395627e8862
Fix warnings for ariesve!
Redo changes