Change in coreboot[master]: util/sconfig: Re-factor emitting of headers to static.c

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Change subject: util/sconfig: Re-factor emitting of headers to static.c
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Patch Set 3:

Build Successful

https://qa.coreboot.org/job/coreboot-gerrit/73843/ : SUCCESS

https://qa.coreboot.org/job/coreboot-checkpatch/27957/ : SUCCESS