LF-3321: drm/imx/dcss: fix regression after introducing rotations

LF-3321: drm/imx/dcss: fix regression after introducing rotations

After rotations were introduced for Vivante tiled/super-tiled formats and these
formats were also allowed for video channels, the tile type was adjusted only
if the framebuffer modifier was linear or belonged to Vivante tiled types. For
tiled video formats, the modifier is none of those and the tiled type remained
unchanged from the previous run.

Tiled video formats are handled by DTRC and DPR always fetches the linear buffers
directly from DTRC.

This patch fixes the regression. Also, add a meaningful error message if a wrong
modifier is passed to DPR for the graphics/video path.

Fixes: 69c833ef382c ("LF-2580: drm/imx/dcss: add 90/270 rotations for Vivante tiled formats.")
Signed-off-by: Laurentiu Palcu <laurentiu.palcu@oss.nxp.com>
Reviewed-by: Liu Ying <victor.liu@nxp.com>