Change in coreboot[master]: ifdtool: redesign some structures

[build bot (Jenkins) (Code Review)]

build bot (Jenkins) has posted comments on this change. ( https://review.coreboot.org/21510 )

Change subject: ifdtool: redesign some structures
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Patch Set 7:

Build Successful

https://qa.coreboot.org/job/coreboot-checkpatch/15662/ : SUCCESS

https://qa.coreboot.org/job/coreboot-gerrit/60451/ : SUCCESS