[coreboot-gerrit] Change in coreboot[master]: drivers/intel/gma/opregion: migrate from nb/common

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Change subject: drivers/intel/gma/opregion: migrate from nb/common
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Patch Set 4:

Build Successful

https://qa.coreboot.org/job/coreboot-gerrit/58441/ : SUCCESS

https://qa.coreboot.org/job/coreboot-checkpatch/13848/ : SUCCESS