Change in coreboot[master]: google/cyan: fix variant memory/silicon init params override

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Change subject: google/cyan: fix variant memory/silicon init params override
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Patch Set 3: Verified+1

Build Successful

https://qa.coreboot.org/job/coreboot-gerrit/61525/ : SUCCESS

https://qa.coreboot.org/job/coreboot-checkpatch/16641/ : SUCCESS