CPUID Incorrectly Returns Siena for Bergamo

[mreed8855]

Bug Description

In a recent submission, the cpuid test returned the incorrect cpuid. Siena was returned instead of Bergamo

The relevant certificate request is:
https://certification.canonical.com/certificates/2407-15946/

To Reproduce

1. Run certify-ubuntu-server (or presumably anything else that causes miscellanea/cpuid to run) on an affected system

Environment

1. Ubuntu 24.04
2. CPU Model: AMD EPYC 9754 128-Core Processor
3. C245 M8

Relevant log output

CPU Model: AMD EPYC 9754 128-Core Processor 
CPUID: 0xaa0f02 which appears to be a AMD Siena SP6 processor

Additional context

No response

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The internal ticket has been created: https://warthogs.atlassian.net/browse/CHECKBOX-1588.

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[Hook25]

#946

This is the source of that CPU id, is it wrong?