CMakeLists: Added gstmfxcontrolbindingproxy.c
CMakeLists: Added gstmfxcontrolbindingproxy.c

Signed-off-by: Gopal, Puunithaaraj <10308ab826b56f8bbce1ec0c10bd609cace363da@intel.com>

ph0b/gstreamer-media-SDK,ishmael1985/gstreamer-media-SDK,rislim/gstreamer-media-SDK,rislim/gstreamer-media-SDK