Bluetooth: Reverted changes to avoid LM_SECURE option for BT Socket.

The LM_SECURE options sets the SECURITY_HIGH for l2cap socket.
Previously this option  is avoided for meeting SAP connection
requirements. As this is required for CTS validation, reverting
back the existing google implementation.

(cherry picked from commit 0b0c7c4cb1c3c557d2d45aaa7b9c21347a338c75)

Change-Id: Ibbeb57bf5984ec0af50441562de70b4ed744a0f0
CRs-Fixed: 387173
Merge "Bluetooth: Reverted changes to avoid LM_SECURE option for BT Socket." into cm-10.1