[coreboot-gerrit] Change in coreboot[master]: mb/ocp/deltalake: Add SMM console log level override

[Jonathan Zhang (Code Review)]

Attention is currently required from: Anjaneya "Reddy" Chagam, Johnny Lin, Angel Pons.
Jonathan Zhang has posted comments on this change. ( https://review.coreboot.org/c/coreboot/+/47006 )

Change subject: mb/ocp/deltalake: Add SMM console log level override
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Patch Set 3:

(1 comment)

File src/mainboard/ocp/deltalake/vpd.h:

https://review.coreboot.org/c/coreboot/+/47006/comment/d763ecb1_4ec541a7 
PS3, Line 36: /* SMM log level */
What are the possible values? Let's document here.
Should we check to make sure the value is legitimate before passing it to SMM?