linux-imx

drm: mali-dp: Store internal format and n_planes in plane state

Save a search through the format lists at commit-time by storing the
internal format ID and number of planes in our plane state.

Signed-off-by: Brian Starkey <brian.starkey@arm.com>
Signed-off-by: Liviu Dudau <Liviu.Dudau@arm.com>