Change in coreboot[master]: mb, soc: Add the SPD_CACHE_ENABLE

[Subrata Banik (Code Review)]

Attention is currently required from: Tim Wawrzynczak, Nick Vaccaro, Zhuohao Lee, Patrick Rudolph.
Subrata Banik has posted comments on this change. ( https://review.coreboot.org/c/coreboot/+/62294 )

Change subject: mb, soc: Add the SPD_CACHE_ENABLE
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Patch Set 3:

(1 comment)

Patchset:

PS2:
> > True, we need to pass the FSPM_UPD structure rather soc config structure alone. if you have time constraint, please go with current approach and I will make it proper in coming days.
>
> We're going to clean up the brask issue and we will need this CL before the end of the this week. Will you be able to make the change before that?

I'm not sure if able to pick this before EOW. If you have priority, please go ahead and I will pick this work after CL lands.
> If so, i think we can wait for it 😊

Please don't wait for me, just to be at safe side 😊 from your work priority.