Change in coreboot[master]: util/cbfstool: Add "expand" command to make CBFS span an fmap region

[Patrick Georgi (Code Review)]

Patrick Georgi has posted comments on this change. ( https://review.coreboot.org/21598 )

Change subject: util/cbfstool: Add "expand" command to make CBFS span an fmap region
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Patch Set 1:

(1 comment)

https://review.coreboot.org/#/c/21598/1/util/cbfstool/cbfstool.c
File util/cbfstool/cbfstool.c:

https://review.coreboot.org/#/c/21598/1/util/cbfstool/cbfstool.c@1300
PS1, Line 1300: 			"Expand CBFS to span entire region\n"
> Don't we want to kill two birds with one stone and implement a command that

I considered that, but that quickly devolves in an epic yak shave: We still need to extract the region after we truncate, then pass through whatever else we have in the build system to reassemble the image, yada yada yada...

(or we'd need to find a different place where the truncate operation fits in better in the build system flow)

At that point I thought I'll make this commit do one thing and do it well.