pmc: add emerald rapids model
This commit adds emerald rapids CPU model to hwpmc/libpmc. JSON event
definitions are imported from Intel perfmon version 1.06.
Reviewed by: mhorne
MFC after: 1 week
Sponsored by: Stormshield
Differential Revision: https://reviews.freebsd.org/D49228
(cherry picked from commit 51a01f3debff8abf63c7cc21db9523c8feb53823)