[L] Change in coreboot[master]: [RFC] drivers/option: Add option list in cbtable

[Benjamin Doron (Code Review)]

Attention is currently required from: Angel Pons, Maximilian Brune.

Benjamin Doron has posted comments on this change. ( https://review.coreboot.org/c/coreboot/+/74121 )

Change subject: [RFC] drivers/option: Add option list in cbtable
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Patch Set 1:

(1 comment)

File src/drivers/option/cfr.c:

https://review.coreboot.org/c/coreboot/+/74121/comment/8e08ded2_028c3be0 
PS1, Line 127: 	write_body(header);
             : 
             : 	menu->size = sm_compute_record_size((char *)menu, header);
A thought: if we let the boot-state machine do this, then silicon, platform drivers, board code, etc can all add their options. `sm_write_cfr()` gets split in two and removed from the API for this.

My in-progress implementation for EDK2 should handle cases where the user enabled the driver but nothing adds forms: we process the header and `while (ProcessedLength < CbCfrSetupMenu->size) { .. }` exits early, so no forms are produced, meaning the menu (in theory) is empty.