hwmon: (f71882fg) Add support for f81768d

Add f81768d (id 0x1210) currently found on Jetway motherboards.
It has 11 voltages but otherwise needed no special handling
in this driver.

Signed-off-by: George Joseph <george.joseph@fairview5.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>