[XS] Change in coreboot[main]: soc/intel/meteorlake: Hook up microcode from repository

[Subrata Banik (Code Review)]

Attention is currently required from: Eran Mitrani, Felix Singer, Jakub Czapiga, Kapil Porwal, Tarun.

Subrata Banik has posted comments on this change by Felix Singer. ( https://review.coreboot.org/c/coreboot/+/84125?usp=email )

The change is no longer submittable: All-Comments-Resolved is unsatisfied now.

Change subject: soc/intel/meteorlake: Hook up microcode from repository
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Patch Set 4:

(1 comment)

File src/soc/intel/meteorlake/Kconfig:

https://review.coreboot.org/c/coreboot/+/84125/comment/f4e1c06b_78fd4164?usp... :
PS4, Line 40: MICROCODE_BLOB_UNDISCLOSED
can i request you to use below code ?

```
select MICROCODE_BLOB_UNDISCLOSED if MAINBOARD_HAS_CHROMEOS
```

CrOS is not using public available ucode and Intel share the separate ucode to us which i assume is little ahead in timeline compared to the public available one. If you can still keep   `MICROCODE_BLOB_UNDISCLOSED` for cros board, we don't need any special handling in downstream codebase.