This patch adds support for Toshiba laptops.  Code is from
RealTek's alsa-driver-1.0.12-4.05b tree.
Signed-off-by: NTobin Davis <tdavis@dsl-only.net>
Signed-off-by: NTakashi Iwai <tiwai@suse.de>
Signed-off-by: NJaroslav Kysela <perex@suse.cz>