Revert "remove stack.conf"

This reverts commit a64d55602e7aff6e6b5882395e92491f0044550b.
Revert "new bluez implementation based on qualcomms"

This reverts commit 6e964e466543c442320328c612cad208ba4c699c.
Revert "new bluez implementation"

This reverts commit ac97cb72a685aa05ca4556b030d23e6fded61541.
Revert "change bluetooth stack to bluez"

This reverts commit 7ad5969590c177de9a28cdf04ca23762296f4c96.

Conflicts:

	BoardConfigCommon.mk

Change-Id: Id2b2fba5c45b69edadbf60956c04dec4fd5c4718