New hardware support - ITE IT8689

[Paweł Metelski <pabou88@xxxxxxxxx>]

Hi,

I've got this new hardware, Gigabyte Z690 UD DDR5.
Apparently it employs a new SuperIO monitoring chip, an ITE IT8689:
[    1.626587] gpio_it87: Unknown Chip found, Chip 8689 Revision 1

I'm running gentoo-sources-5.14.17 but it also seems missing on upstream git.

I could probably test your patches quite easily (I suppose I just need
to build a module and load it, see dmesg output, try to spin up a fan,
see if hwmon reports it, etc.), I could also try to patch it myself
given a domain introduction (8y exp C dev, 0y exp kernel C dev).

-- 
Pozdrawiam,
Paweł Metelski