x86/cpu/amd: Move the errata checking functionality up

stable inclusion
from stable-v5.10.187
commit 191b8f9b0e3708e8325d8d28e1005a1fbe5e3991
category: bugfix
bugzilla: https://gitee.com/src-openeuler/kernel/issues/I7NLYY
CVE: CVE-2023-20593

Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=191b8f9b0e3708e8325d8d28e1005a1fbe5e3991



--------------------------------

Upstream commit: 8b6f6877

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>
Signed-off-by: Yu Liao <liaoyu15@huawei.com>