Change in coreboot[master]: security/vboot: Add interface for FSP 2.0 mrc caching

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Change subject: security/vboot: Add interface for FSP 2.0 mrc caching
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Patch Set 4: Verified+1

Build Successful

https://qa.coreboot.org/job/coreboot-gerrit/68017/ : SUCCESS

https://qa.coreboot.org/job/coreboot-checkpatch/22492/ : SUCCESS