Revert "remove stack.conf"

This reverts commit 0585bf7b5b9fc4dd7dba4bb3d59d635c17529392.
Revert "new bluez implementation based on qualcomms"

This reverts commit 627bb684691f8247f26150265598308fb7acbda9.
Revert "new bluez implementation"

This reverts commit 997fcd7404984a732529230413d7c3e63125db27.
Revert "change bluetooth stack to bluez"

This reverts commit e2e08ea2d0b3af10860948b3542e55e4eef9659d.

Conflicts:

	BoardConfigCommon.mk

Change-Id: I9766d2695f097c16cd8ae9e203bf2648993a6d99