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

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Change subject: util/cbfstool: Add "expand" command to make CBFS span an fmap region
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Patch Set 3: Verified+1

Build Successful

https://qa.coreboot.org/job/coreboot-gerrit/60745/ : SUCCESS

https://qa.coreboot.org/job/coreboot-checkpatch/15945/ : SUCCESS