[coreboot-gerrit] [L] Change in coreboot[master]: tests/spi: Refactor to allow sharing most test code across vendors

[Daniel Gröber (dxld) (Code Review)]

Attention is currently required from: Jakub Czapiga.

Daniel Gröber (dxld) has removed Daniel Gröber from this change.  ( https://review.coreboot.org/c/coreboot/+/46475 )

Change subject: tests/spi: Refactor to allow sharing most test code across vendors
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Removed cc Daniel Gröber .