Voice Privacy Icon Support for CDMA

With this Fix Voice Privacy will be part of call capability
information. IncallUI will update the VP information
whenever TelephonyConnection is notified of VoicePrivacy change

(cherry picked from Ia0966f3546e83b8160c363688ce23368e35435ca)
CRs-Fixed: 599389

Change-Id: Ibc952170f316f6351b1a2884a2b71921c888a913