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PCI Function 0 is used on Family 17h and later only to read the "dhar"
value. This value is printed and provided through a module-specific
debug sysfs file. The value is not used for any Family 17h and later
code, and it does not have any apparent debug value on these systems.

Remove "dhar", Function 0 PCI IDs, and all related code.
Signed-off-by: Yazen Ghannam <yazen.ghannam@amd.com>
Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de>
Link: https://lore.kernel.org/r/20230127170419.1824692-5-yazen.ghannam@amd.com