drm/tegra: dsi - Initialize proper packet sequences

The packet sequencer needs to be programmed depending on the video mode
of the attached peripheral. Add support for non-burst video modes with
sync events (as opposed to sync pulses) and select either sequence
depending on the video mode.

Signed-off-by: Thierry Reding <treding@nvidia.com>

diff --cc drivers/gpu/drm/tegra/dsi.c
Simple merge