FreeBSD/src 0d09464 (r340446)sys/dev/amdsmn amdsmn.c, sys/dev/amdtemp amdtemp.c

MFC r340425 (by cem)

amdsmn(4)/amdtemp(4): Attach to Ryzen 2 hostbridges

As reported, tested, and patch supplied by Johannes.

There may be future work to do to support multiple sensors, but for now, any
sensor at all is a strict improvement for Ryzen 2 systems.

PR:             228480
Submitted by:   Johannes Lundberg <johalun0 AT gmail.com> (earlier version)
Reported by:    deischen@, Johannes, and numerous others
Early MFC approved by:  cem
Approved by:    re (kib)
Relnotes:       yes
DeltaFile
+17-6sys/dev/amdsmn/amdsmn.c
+6-2sys/dev/amdtemp/amdtemp.c
+23-82 files

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