K 10
svn:author
V 6
grehan
K 8
svn:date
V 27
2014-04-25T17:35:34.117991Z
K 7
svn:log
V 253
Respect and track the enable bit in the PCI configuration address word.
Ignore writes, and return 0xff's, on config accesses when not set.
Behaviour now matches that seen on h/w.

Found with a NetBSD/amd64 guest.

Reviewed by:	tychon
MFC after:	3 weeks

END