Change in coreboot[master]: mainboard/winnet/g170: drop the redundant vendor name

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Change subject: mainboard/winnet/g170: drop the redundant vendor name
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Patch Set 2:

Build Successful

https://qa.coreboot.org/job/coreboot-gerrit/61054/ : SUCCESS

https://qa.coreboot.org/job/coreboot-checkpatch/16229/ : SUCCESS