m7: require vendor

Change-Id: I75c30efd0de4cbd57569766b05c84f43c367f3f4
m7-common: libaudioamp: Add initialization function stubs

Change-Id: I34aad7e268dbb59edb0d6c224f5f95cc75e405fa
m7-common: use CAMCORDER_TX use case

Change-Id: I98df49c5347c839a2b12865de631187bc3572170