[coreboot-gerrit] Change in coreboot[master]: google/reef: Add coral

[build bot (Jenkins) (Code Review)]

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Change subject: google/reef: Add coral
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Patch Set 1: Verified+1

Build Successful

https://qa.coreboot.org/job/coreboot-checkpatch/10529/ : SUCCESS

https://qa.coreboot.org/job/coreboot-gerrit/54828/ : SUCCESS