hal: Enable USB RX and Handset Mic combination support for Voice call

-For voice call usecase if connected USB OUT device does not have a
mic, currently we fallback to Earpiece-Handset mic device pair.
-With tunnel mode USB support, we can instead use USB RX and
Handset Mic as a device pair for the voice call.
-Update device selection to ensure that this pair is selected.

Change-Id: I0fc6c990bef91d675ea5f2bf13b3ed0b576db9ee