drm/msm/sde: signal fences during frame_event_error for video mode

Add release/retire fence signal flags while reporting frame_event
errors to crtc in video mode encoders. This way the fences also
recover properly after the frame error.

Change-Id: I034abcd949d76f4787387270629cbb8397377f5e
Signed-off-by: Veera Sundaram Sankaran <veeras@codeaurora.org>