Change in coreboot[master]: soc/intel/denverton_ns: Add early SPI flash init

[Дмитрий Понаморев (Code Review)]

Attention is currently required from: Mariusz Szafrański, Angel Pons, King Sumo.
Дмитрий Понаморев has posted comments on this change. ( https://review.coreboot.org/c/coreboot/+/57033 )

Change subject: soc/intel/denverton_ns: Add early SPI flash init
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Patch Set 4:

(1 comment)

Patchset:

PS4: 
Faced the same problem. Memory training settings were not saved (occurred every time the platform was booting). The King Sumo solution helps. Will these changes be implemented?