Reimplement SBC Dual Channel in a saner way

Revert "fixup! SBC Dual Channel (SBC HD Audio) support"
This reverts commit 40aaeeb7.

Revert "Assume optional codecs are supported if were supported previously"
This reverts commit b4615fd7.

Revert "SBC Dual Channel (SBC HD Audio) support"
This reverts commit eef20ba8.

Change-Id: I0bd72ef70dc1f2c5c4f121e1996926238c8e9f53