Functions from ALSA library reported by chkcoverage.
The following functions won't be used in drumstick.  

MISC (event filter)

snd_seq_change_bit
snd_seq_get_bit
snd_seq_set_bit
snd_seq_unset_bit

CLIENT - private functions

snd_seq_hw_open
snd_seq_hw_ops
snd_seq_create_event
snd_seq_event_types

TIMER - private functions

snd_timer_async
snd_timer_name
snd_timer_hw_open
snd_timer_nonblock
snd_timer_query_hw_open
snd_timer_type
