Change in coreboot[master]: security/vboot: Add two weak methods for vboot2

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Change subject: security/vboot: Add two weak methods for vboot2
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Patch Set 10: Verified+1

Build Successful

https://qa.coreboot.org/job/coreboot-checkpatch/19230/ : SUCCESS

https://qa.coreboot.org/job/coreboot-gerrit/64423/ : SUCCESS