Displaying HD audio indicator for GSM/CDMA calls

Acquire audio quality information from RIL and set HD quality to
connection so that HD audio indicator can be displayed in in-call
screen. This feature is necessary to fulfill some carriers
requirement.

Test: manual - Checked that HD audio indicator is displayed on UI in
GSM/CDMA calls.
Bug: 30207043

Change-Id: I988e5f18ebff33a49189e11ae2a20bf4aa8005f4