Use vendor id register for chip matching instead of configuration register patterns. From Stephan Leemburg <sleemburg@jvc.nl>.
Use vendor id register for chip matching instead of configuration
register patterns. From Stephan Leemburg <sleemburg@jvc.nl>.

Tested by jsg@.

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