Change in coreboot[master]: commonlib/cbfs: Add hook function

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build bot (Jenkins) has posted comments on this change. ( https://review.coreboot.org/24967 )

Change subject: commonlib/cbfs: Add hook function
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Patch Set 1: Verified-1

Build Unstable

https://qa.coreboot.org/job/coreboot-gerrit/68139/ : UNSTABLE

https://qa.coreboot.org/job/coreboot-checkpatch/22591/ : SUCCESS