[coreboot-gerrit] [L] Change in coreboot[master]: mb/system76/cml-u: Convert lemp9 to a variant

[Tim Crawford (Code Review)]

Attention is currently required from: Jeremy Soller.

Tim Crawford has posted comments on this change. ( https://review.coreboot.org/c/coreboot/+/64528 )

Change subject: mb/system76/cml-u: Convert lemp9 to a variant
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Set Ready For Review