drm/msm/sde: flush recovery commit while in reset

For video mode panels, a vsync may be received after
the hardware recovery has completed, but before the
final "no pipes" commit has been flushed by the driver.
This can result in the hardware retrying the previous
commit configuration.

To avoid this, prepare the "no pipes" commit while the
hardware is still held in reset, and attempt to complete
the "no pipes" flush near the start of the first frame
after reset is released.

Change-Id: Icb071219ef1ec2a3756edd6ea33ad487c9ad0233
Signed-off-by: Clarence Ip <cip@codeaurora.org>