drm/msm/sde: reset release and retire timeline for display

Reset release and retire fence timeline when crtc
disable is called. At this point; encoder is already
disabled and timing engine is also disabled for video
mode panel. Command mode panel has transferred the last
buffer. This gives assurance that display hardware is not
accessing any buffer.

Change-Id: I20908a8e8766c2cbe26ffe8b110b98bcb1fd881f
Signed-off-by: Dhaval Patel <pdhaval@codeaurora.org>