[PATCH] hwmon: New vt8231 driver

Port the vt8231 hardware monitoring driver from lm_sensors CVS to
Linux 2.6.

Signed-off-by: Roger Lucas <roger@planbit.co.uk>
Signed-off-by: Jean Delvare <khali@linux-fr.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>