vivnate is a renoder only gpu - remove hdmi stuff

Signed-off-by: Christian Gmeiner <christian.gmeiner@gmail.com>
get rid of mdp stuff

Signed-off-by: Christian Gmeiner <christian.gmeiner@gmail.com>
get rid of dsi stuff

Signed-off-by: Christian Gmeiner <christian.gmeiner@gmail.com>