configs: sdm660: Add compress-voip bt-a2dp path entries

-During device switch in a voip call, some apps dont close the session
and instead change the mode to MODE_IN_NORMAL.
-This leads to the voip session to get routed to A2DP-Handset mic pair,
which is not a standard or supported pair.
-To avoid routing errors and only to handle this transitory state,
add compress-voip a2dp path.

Change-Id: I8560ca749d719c983d1b0171f8e3b215370dc372