(minor) Update Sony Sx90 (2012) for audio support

[Illico]

http://forum.serviio.org/viewtopic.php?f=11&t=14339

Adds:

truehd/flac for mkv movies (rare, but I have a few) lpcm for MPEG-2 (not uncommon for extracted DVD music videos)

These are unsupported natively

Could be added for all other 2010/2011 BDP serie too...