VT: SFR: Added missing rtp-param-opponent-id in stagefright.

$ setParameter: failed to find key rtp-param-opponent-id

[Problem] TMMBN not supported due to missing parameter.
[Cause] rtp-param-opponent-id is not integrated due to it has dependency
   with with a patch of frameworks/base.
[Solution] Added a parameter named rtp-param-opponent-id to support TMMBN.

Bug: 121230209
Change-Id: Ifd8e30fd8032a2d7e306b5bcee72642fba2c266c
Signed-off-by: Byeongjo Park <bjo.park@samsung.com>