add the PCI id for the ServerWorks HT-1000 SMbus controller.
add the PCI id for the ServerWorks HT-1000 SMbus controller.

From the Linux i2c-piix4 driver via gwk@

piixpm0 at pci0 dev 2 function 0 "ServerWorks HT-1000" rev 0x00
iic0 at piixpm0
admcts0 at iic0 addr 0x2c

orumin/openbsd-efivars,orumin/openbsd-efivars,orumin/openbsd-efivars,orumin/openbsd-efivars