Revert "Revert "M2: fwd-port our old bcmdhd drivers and fixup board files to make them work.""

This reverts commit 47cb26f82f0dc5a54379a93259e0628998dd746b.
Revert "M2: @bluetooth - ohai!"

This reverts commit 457aaa1c4795f448e9828d20aec45de1e0b4a59c.