Enable 2-EV3 packets for Wide Band HFP client

The previous code defaulted to the failsafe settings rather than the
prefered settings when accepting an eSCO connection for Wide Band
Speech, this change will enable the T2 (2-EV3) packets.

Bug: 110227849
Test: Connect to phone, place call, verify 2-EV3 packets via HCI logs.
Change-Id: I0c215249b16cfcd4d79137fa80b0d9cc1992c9da