Change in coreboot[master]: soc/intel/common: Add functions into common system agent library

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Change subject: soc/intel/common: Add functions into common system agent library
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Patch Set 1: Verified-1

Build Failed

https://qa.coreboot.org/job/coreboot-gerrit/58997/ : ABORTED

https://qa.coreboot.org/job/coreboot-checkpatch/14341/ : SUCCESS