amdtemp(4): Add support for Family 17h CCD sensors

Probe Family 17h CPUs for up to 4 (Zen, Zen+) or 8 (Zen2) CCD temperature
sensors. These were discovered by Ondrej Čerman
(https://github.com/ocerman) and collaborators experimentally, and are not
currently documented in any datasheet I have access to.

(cherry picked from commit c59b9a4f8d2c7a34782a3885f1c76fb1decea174)