Change in coreboot[master]: mainboard/google/kahlee: Add MAINBOARD_FAMILY

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Change subject: mainboard/google/kahlee: Add MAINBOARD_FAMILY
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Patch Set 1: Verified-1

Build Failed

https://qa.coreboot.org/job/coreboot-gerrit/63058/ : FAILURE

https://qa.coreboot.org/job/coreboot-checkpatch/18011/ : SUCCESS