add files which I forget to track.
snd-bebob: add handling FCP transaction for sampling rate

According to AV/C Digital Interface Command Set General Speficification Version
4.2 (1394 Trade Association, Sept 1, 2004), set_sampling_rate and
get_sampling_rate functions are added to snd-bebob.

These functions are available for the other modules. So near future these
should be moved to snd-firewire-lib.
snd-bebob: add proc interface for get sampling rate