[Feature][T106][task-view-97] add interface for voice call to rtp,
modification in cap, modification in lynq, and add demo

Only Configure: No
Affected branch: unknown
Affected module: voice call and at
Is it affected on both ZXIC and MTK: only ZXIC
Self-test: yes
Doc Update: yes

Change-Id: I21796930d7ff455f02e4f1ad53c56261ba0d45cb
25 files changed