Change in coreboot[master]: util/cbfstool: Add optional argument ibb

[David Hendricks (Code Review)]

David Hendricks has posted comments on this change. ( https://review.coreboot.org/c/coreboot/+/29744 )

Change subject: util/cbfstool: Add optional argument ibb
......................................................................

Patch Set 21:

Hi Patrick & Philipp,
I'd like to see these patches get merged soon. Do you have any strong opinions on the short option for this patch? I think -O is an awkward choice, but I don't think it's important enough to block the patch. An alternative approach might be to use the long option only. That way we preserve short options for commands that are more likely to be invoked by users at the command-line (I assume this option will only be used in scripts).