[coreboot-gerrit] Change in coreboot[master]: lib: Add delay.c to smm

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Change subject: lib: Add delay.c to smm
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Patch Set 2:

Build Successful

https://qa.coreboot.org/job/coreboot-checkpatch/22670/ : SUCCESS

https://qa.coreboot.org/job/coreboot-gerrit/68222/ : SUCCESS