[coreboot-gerrit] Change in coreboot[master]: mb/google/kahlee: Set EFS SPI platform configuration

[Matt Papageorge (Code Review)]

Matt Papageorge has posted comments on this change. ( https://review.coreboot.org/c/coreboot/+/44002 )

Change subject: mb/google/kahlee: Set EFS SPI platform configuration
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Patch Set 2:

I have refactored the change as follows.
1. Kconfig changes
2. Build changes for picasso platforms
3. Build changes for stoney ridge platforms

An optional future 4th change would be to address the duplicate definition of this information in
mainboard/google/kahlee/bootblock/bootblock.c
mainboard/google/zork/variants/baseboard/devicetree_dalboz.cb
mainboard/google/zork/variants/baseboard/devicetree_trembyle.cb