configuration: Yves Grenier has reported via ffado-users that the Mbox2 pro can strea...

configuration: Yves Grenier has reported via ffado-users that the Mbox2 pro can stream audio if initialised on a Digidesign-supported platform first (FFADO falls back to generic support, which means the Bebob driver).  Add a configuration entry to make the use of the Bebob driver by this device explicit.  In order to count this device as supported, the initialisation details will need to be identified and coded.  A device-specific mixer module would also be useful.  Thanks to Yves Grenier for the information and testing.

git-svn-id: svn+ssh://ffado.org/ffado/trunk@2573 2be59082-3212-0410-8809-b0798e1608f0