drm/msm/sde: log ctl reset status on video vblank

Log the ctl reset status bit during video mode vblank
interrupts. This status bit is high whenever a hardware
recovery is in progress due to an underrun condition.

Change-Id: Ib91bb0fe82f14033e4641ab0a5cebb90a5e20cae
Signed-off-by: Clarence Ip <cip@codeaurora.org>