hwmon: (dme1737) Fix overflows seen when writing into limit attributes

Writes into voltage limit, temperature limit, temperature hysteresis,
and temperature zone attributes can overflow due to unclamped parameters
to multiplications, additions, and subtractions.

Cc: Juerg Haefliger <juergh@gmail.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>