msm: kgsl: Get an active count during CFF

When CFF is running we cannot restart the device. This is because the
simulator cannot handle device restarts in playback. Get an active
count when CFF is enabled so that device is always up.

Change-Id: I3214237e165e0cc23ada12f8a52361155b3c3ec1
Signed-off-by: Shubhraprakash Das <sadas@codeaurora.org>