1. Implement 7.1 Output for vt1618 codec.
2. Fix typos in comments from my previous 1617a patch.
Signed-off-by: NJohn L. Utz III <john.utz@dmx.com>
Signed-off-by: NTakashi Iwai <tiwai@suse.de>
Signed-off-by: NJaroslav Kysela <perex@perex.cz>