drm/msm: reduce sde evt32 logs to trace more commits

Current driver enables lots of traces and not able to
accommodate more than 3/4 last commits in event print
log. This change reduces the logging to accommodate
more traces about previous commits.

Change-Id: I9f66cd93b0c487dcd3df188e47b08dc0261b56d6
Signed-off-by: Dhaval Patel <pdhaval@codeaurora.org>