K 10
svn:author
V 8
freqlabs
K 8
svn:date
V 27
2020-07-14T22:25:06.012707Z
K 7
svn:log
V 368
hwpmc: Always set pmc_cpuid to something

pmc_cpuid was uninitialized for most AMD processor families.  We can still
populate this string for unimplemented families.

Also added a CPUID_TO_STEPPING macro and converted existing code to use it.

Reviewed by:	mav
MFC after:	2 weeks
Sponsored by:	iXsystems, Inc.
Differential Revision:	https://reviews.freebsd.org/D25673

END