Add a test going through all connectors/crtcs/modes/formats painting to
a front FB with CPU or painting to a back FB with CPU and blitting it
to the front FB.
Only formats understood by cairo are supported for now.
Signed-off-by: Imre Deak <imre.deak@intel.com>
Reviewed-by: Rodrigo Vivi <rodrigo.vivi@gmail.com>
