Added support for Voice Features on SGLTE Call

- For every put command from userspace, flags related
to Voice Features ( TTY, WVe etc) are updated for both
Voice and SGLTE Sessions.
- Since either SGLTE or Voice Call will be active at any given
point of time, flags for both the sessions should be upated.

Change-Id: Iab9f3aa4938eabce7e81d59938a8ebd7a4119857
Signed-off-by: Satish Babu Patakokila <sbpata@codeaurora.org>