ASoC: msm: Change SGLTE to Voice2 for reusability of code

-Use Voice2/VOICE2 instead of sglte/SGLTE in function and variable names
-Voice2 call can represent SGLTE call or DSDA call

Change-Id: I0a5ce71cb1042bfbc08159f01aeab26a030b86dc
Signed-off-by: Helen Zeng <xiaoyunz@codeaurora.org>
9 files changed