Fixed AC3 interface in device_setup=0x00 mode thanks to Hakan
Lennestal and updated documentation
Signed-off-by: NThibault Le Meur <Thibault.LeMeur@supelec.fr>
Signed-off-by: NTakashi Iwai <tiwai@suse.de>
Signed-off-by: NJaroslav Kysela <perex@suse.cz>