msm: kgsl: Immediately signal a timeline if the timestamp has retired

When creating a new fence immediately signal the timeline if the target
timestamp has already expired and don't create a new GPU event.  This
cuts down on the number of events being fired for already expired
timestamps and removes the brief delay for the event to go out and
immediately come back.

Change-Id: Ic0dedbadc0512977f662bda5fdb4c4d3db7bd51f
Signed-off-by: Jordan Crouse <jcrouse@codeaurora.org>