d851: move wifi and bt to variant trees

Change-Id: Iac22ab6fdfb9920ba54fb8960082b526d5c46c39
d851: decommonizing venus firmware

Change-Id: I36a4a5e9c0a0ccbb33b6130a8e284d7a86b85fd3
Merge pull request #2 from invisiblek/cm-11.0

Borrowing even more from invisiblek