Change in coreboot[master]: mb/google/puff: add a region to cache SPD data

[EricR Lai (Code Review)]

EricR Lai has posted comments on this change. ( https://review.coreboot.org/c/coreboot/+/40415 )

Change subject: mb/google/puff: add a region to cache SPD data
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Patch Set 7:

(2 comments)

https://review.coreboot.org/c/coreboot/+/40415/7/src/mainboard/google/hatch/... 
File src/mainboard/google/hatch/Kconfig:

https://review.coreboot.org/c/coreboot/+/40415/7/src/mainboard/google/hatch/... 
PS7, Line 82: if ROMSTAGE_SPD_CBFS
Add something like USE_SPD_CACHE config should be better.

https://review.coreboot.org/c/coreboot/+/40415/7/src/mainboard/google/hatch/... 
File src/mainboard/google/hatch/romstage_spd_smbus.c:

https://review.coreboot.org/c/coreboot/+/40415/7/src/mainboard/google/hatch/... 
PS7, Line 20: 	uint8_t *spd_cache;
maybe use the if CONFIG_USE_SPD_CACHE to guard this? So you won't check this for the unsupported project.