IT87 voltage registers update (#1567)

* Update SuperIOHardware.cs

The embedded switch on the model has no default and would break out of the manufacturer switch if the model wasn't Z790_Taichi.

* Fix the voltage registers for IT87

* Based on linux Hwmon
* Also go from 10 to 9 voltage readings, as no motherboard in LHM using IT87 has more than 9 voltage readings.

* Update SuperIOHardware.cs

* Update IT87XX.cs