eSCO: BT 4.1 Enhanced SCO command (1/5)

Added support for BT 4.1 enhanced SCO feature on the stack.
This feature allows the stack to create a SCO connection with
remote device by using Hci_Enhanced_Setup_Synchronous_Connection
command after checking the controller (4.1) support for
enhanced SCO command.
Added the command parameters to use the command in both wide band
speech(WBS) and narrow band speech(NBS) scenarios.

Number of Broadcom vendor specific commands(VSCs)that are needed
to be sent to Broadcom controllers along with this command have
also been updated accordingly

NOTE: This change would also need a firmware patch for
the feature to work on Broadcom contollers which will
be delivered to Google in a separate change set.

Bug: 19540029
Test: make, HFP PTS test, testplans/86884, testplans/87103
Change-Id: I1014d81be5cbe91078a4484dd072ac3957bfdfe4