Change in coreboot[master]: soc/intel/cannonlake: Add GPIO community 3 definition

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Change subject: soc/intel/cannonlake: Add GPIO community 3 definition
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Patch Set 7:

Build Successful

https://qa.coreboot.org/job/coreboot-checkpatch/18722/ : SUCCESS

https://qa.coreboot.org/job/coreboot-gerrit/63854/ : SUCCESS