Change in coreboot[master]: soc/intel/common: Add funtion to modify PAT & NXE bit

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Change subject: soc/intel/common: Add funtion to modify PAT & NXE bit
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Patch Set 4: Verified+1

Build Successful

https://qa.coreboot.org/job/coreboot-gerrit/69417/ : SUCCESS

https://qa.coreboot.org/job/coreboot-checkpatch/23738/ : SUCCESS