[1/2] x86/cpu/amd: Move the errata checking functionality up

[1/2] x86/cpu/amd: Move the errata checking functionality up

Origin: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit?id=5fc203d8d3ed416bee054e9f2e6513df51d74577
Bug-Debian-Security: https://security-tracker.debian.org/tracker/CVE-2023-20593

Upstream commit: 8b6f687743dacce83dbb0c7cfacf88bab00f808a

Avoid new and remove old forward declarations.

No functional changes.

Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Gbp-Pq: Topic bugfix/x86
Gbp-Pq: Name x86-cpu-amd-Move-the-errata-checking-functionality-u.patch