msm_fb: display: wait for vsync instead of dmap_done

At both lcdc and dsi video mode panel, wait for vsync
interrupt instead of dmap_done interrupt to make sure a
single frame updated during every vsync period.

CRs-fixed: 305599
Signed-off-by: Kuogee Hsieh <khsieh@codeaurora.org>
4 files changed