Switch to Mms-caf

Change-Id: Ic3d143c4304f17a2aea3ce43b19214641ade13ad
Enable FFMPEG and Stagefright plugins

Change-Id: Ia41715481d70040f9aa53c2a1cd080758ef4e96f
Track own DSPManager and media repos

Change-Id: I850b18174628293c4c8c7494c2c4e5b8358b73b4