oxfw: apply new way to detect Loud models

See:
http://mailman.alsa-project.org/pipermail/alsa-devel/2014-August/079929.html
firewire-lib: Add sorting in-packets for full duplex streams with sync

In full duplex streams with synchronization, consistency of SYT field in
in-packets is important for out-packets. This commit add sorting in-packets
according to the value of dbc.