Replace the id of a control on the card
int snd_ctl_rename_id(struct snd_card * card, struct snd_ctl_elem_id * src_id, struct snd_ctl_elem_id * dst_id);
card
the card instance
src_id
the old id
dst_id
the new id
Finds the control with the old id from the card, and replaces the id with the new one.
Zero if successful, or a negative error code on failure.