[S] Change in coreboot[main]: soc/intel/xeon_sp/spr: Improve CPU codes

[Angel Pons (Code Review)]

Attention is currently required from: Arthur Heymans, Christian Walter, Johnny Lin, Jonathan Zhang, Lean Sheng Tan, Patrick Rudolph, Shuo Liu, Tim Chu.

Angel Pons has posted comments on this change. ( https://review.coreboot.org/c/coreboot/+/82097?usp=email )

Change subject: soc/intel/xeon_sp/spr: Improve CPU codes
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Patch Set 3:

(1 comment)

File src/soc/intel/xeon_sp/spr/cpu.c:

https://review.coreboot.org/c/coreboot/+/82097/comment/3153b228_8d03ff4c :
PS2, Line 273: BIOS_WARNING
> This is a point raised during review by Paul. […]

I think current CPUs outright won't work without microcode updates. This should at least be an error. But I would also be OK with skipping this check, since `intel_microcode_load_unlocked()` already prints a warning: https://github.com/coreboot/coreboot/blob/916124cdba1b7135ed6b301a4dcd1db42c...