drm/tegra: dsi - Use internal pixel format

The pixel format enumeration values used by the Tegra DSI controller
don't match those defined by the DSI framework. Make sure to convert
them to the internal format before writing it to the register.

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

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

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