ALSA: bebob: More constify text arrays

Signed-off-by: Takashi Iwai <tiwai@suse.de>
ALSA: bebob: Use snd_ctl_enum_info()

... and reduce the open codes.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
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.