[S] Change in coreboot[master]: intel/cmn/smm: Introduce PERIODIC_SMI_RATE_SELECTION_IN_GEN_PMCON_B

[Michał Żygowski (Code Review)]

Attention is currently required from: Paul Menzel, Maximilian Brune, Angel Pons, Krystian Hebel.

Michał Żygowski has posted comments on this change. ( https://review.coreboot.org/c/coreboot/+/69870 )

Change subject: intel/cmn/smm: Introduce PERIODIC_SMI_RATE_SELECTION_IN_GEN_PMCON_B
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Patch Set 4:

(1 comment)

File src/soc/intel/common/block/smm/Kconfig:

https://review.coreboot.org/c/coreboot/+/69870/comment/f2505adb_4f71230f 
PS4, Line 53: 	  Intel Core processors select the periodic SMI rate via GEN_PMCON_A.
> It would probably result in much more code, since you have to implement it for every SOC.

Maybe if the discrepancy was much higher, but for now only the apollolake has been identified with such difference.