This patch adds commands for selecting input and output on the Sound
Blaster ZxR. The ZxR has no front panel header, and has line-in on the
separate daughter board, so it only does rear-mic.
Signed-off-by: NConnor McAdams <conmanx360@gmail.com>
Reviewed-by: NTakashi Sakamoto <o-takashi@sakamocchi.jp>
Signed-off-by: NTakashi Iwai <tiwai@suse.de>