Change in coreboot[master]: google/cyan: convert to variant configuration

[build bot (Jenkins) (Code Review)]

build bot (Jenkins) has posted comments on this change. ( https://review.coreboot.org/21126 )

Change subject: google/cyan: convert to variant configuration
......................................................................

Patch Set 3: Verified+1

Build Successful

https://qa.coreboot.org/job/coreboot-gerrit/59060/ : SUCCESS

https://qa.coreboot.org/job/coreboot-checkpatch/14397/ : SUCCESS