Change in coreboot[master]: src/mainboard/intel/cannonlake: Add gpio support for cannonlake

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Change subject: src/mainboard/intel/cannonlake: Add gpio support for cannonlake
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Patch Set 4: Verified-1

Build Unstable

https://qa.coreboot.org/job/coreboot-gerrit/59120/ : UNSTABLE

https://qa.coreboot.org/job/coreboot-checkpatch/14455/ : SUCCESS