Okay, that did not go as expected. Anyway
This patch add the qemu EPYC-Rome model and includes cpuid data from an
EPYC 7502 system as well as updated cpuid information from a Ryzen 9
3900 system.
Since the EPYC 7502 and the Ryzen 9 are pretty much identical, the
latter could be dropped as there is no corresponding qemu model.
Markus