port-i386/43342: Small update/fix to busclock detection on x86

[d.den.brok%uni-bonn.de@localhost]

>Number:         43342
>Category:       port-i386
>Synopsis:       Small update/fix to busclock detection on x86
>Confidential:   no
>Severity:       non-critical
>Priority:       medium
>Responsible:    port-i386-maintainer
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Sun May 23 12:55:00 +0000 2010
>Originator:     Dennis den Brok
>Release:        any
>Organization:
-
>Environment:
>Description:
NetBSD on x86 currently wrongly determines certain CPU's bus clocks, notably on 
any CPU with family 6 model 5 and extmodel != 0, because the latter is ignored 
mostly. It also doesn't know about newer Intel Atom models.
>How-To-Repeat:
Boot NetBSD on an affected system.
>Fix:
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====