!580 Intel: Recover two microcode interfaces when support In Field Scan(IFS) multi-blob images

Merge Pull Request from: @allen-shi 
 
IFS is a hardware feature to run circuit level tests on a CPU core to detect problems that are not caught by parity or ECC checks.

Intel In Field Scan(IFS) with multi-blob images supported in [PR471](https://gitee.com/openeuler/kernel/pulls/471), but also introduced microcode interface changes:
1. Removed /dev/cpu/microcode interface(Used by iucode-tool, microcode_ctl).
2. Disabled microcode late loading as default(MICROCODE_LATE_LOADING), which removed /sys/devices/system/cpu/microcode/reload interface.

This PR includes 14 commits totally and is to recover the two microcode interfaces support by reverting related commits in [PR471](https://gitee.com/openeuler/kernel/pulls/471).

 **Intel-Kernel Issue** 
[#I6L337](https://gitee.com/openeuler/intel-kernel/issues/I6L337)

 **Test** 
Built and run the kernel successfully on openEuler 22.03 LTS SP1.
Test is PASS on SPR platform.

 **Known Issue** 
N/A

 **Default config change** 
N/A 
 
Link:https://gitee.com/openeuler/kernel/pulls/580

 

Reviewed-by: Jason Zeng <jason.zeng@intel.com>
Signed-off-by: Jialin Zhang <zhangjialin11@huawei.com>