Update AESinkIntelSMD.cpp

Just adding in some extra code grabbed from the RPi sink in an effort to restore AC3 passthrough.
I will do in stages as test each commit until I fix or eventually get stuck.
Definitely needs a lot more code added to AESinkIntelSMD.cpp and possibly AESinkIntelSMD.h
Update AESinkIntelSMD.cpp
Update AESinkFactory.cpp
Update AESinkIntelSMD.cpp

added info.m_dataFormats.push_back(AE_FMT_AC3); for AC3 Passtrough
Update AESinkIntelSMD.cpp
Merge https://github.com/quasar1/boxeebox-xbmc