!4103 [OLK-6.6] Intel: microcode restructuring backport

Merge Pull Request from: @aubrey-intel 
 
This series backport microcode restructuring code introduced from v6.7-rc1 to v6.6. The patchset focus on x86/microcode cleanup and late loading enhancements.

The following two patches are significant to intel platform.

[x86/microcode/intel: Add a minimum required revision for late loading]
https://lore.kernel.org/lkml/20231017211724.135503217@linutronix.de/#r

[x86/microcode: Rendezvous and load in NMI]
https://lore.kernel.org/lkml/20231017211723.856859665@linutronix.de/#r 
 
Link:https://gitee.com/openeuler/kernel/pulls/4103

 

Reviewed-by: Jason Zeng <jason.zeng@intel.com>
Signed-off-by: Zheng Zengkai <zhengzengkai@huawei.com>