I have a mainboard here with this chip on it.
From /var/log/messages:
```
May 1 19:16:06 fred kernel: superio0: <ITE IT8613 SuperIO (revision 0x01)> at port 0x2e-0x2f on isa0
```
I'm running stable/13 on this machine but this patch is against current (so only compile-time tested).