hal: Fix voice session setup failure

Sometimes no RTP packets transferred in VoLTE call on headset.
Voice call path setup is failed due to no backends enabled.
This happens when routing is triggered on combo device for
primary output and mode is MODE_IN_CALL at that time.
Fix this issue by selecting proper device based on in call
information.

CRs-Fixed: 859796
Change-Id: I9a5a6b9296d168e9292b94fda147491ee35c0edd