maguro: cleanup

Change-Id: Id20881e3acb7809c6bd7941a5d521f878e1ad867
Revert "move bdroid bluetoothconfig to tuna board"

This reverts commit c2969cb54227ab3b1513b2bc5f11fe73ffa3e652.

Change-Id: Ie0d06055770e1f6b588f57daacbcad15918700da
Enable BLE (Bluetooth Smart 4.0) for Galaxy Nexus

Change-Id: I51517f807a78b64be16b4d320f9d3e7b6278bb22