Enabled dithering in the intel VCH DVO for 18bpp pipelines.
Enabled dithering in the intel VCH DVO for 18bpp pipelines.

Signed-off-by: Thomas Richter <14051859736dd70525af7cbbbadfb687c175ca12@math.tu-berlin.de>
Signed-off-by: Daniel Vetter <c1b6782c4af8f0673da8923a0702a1832e5940f4@ffwll.ch>

KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs