Change in coreboot[master]: include/cpu/x86: Add clflush inline function

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Change subject: include/cpu/x86: Add clflush inline function
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Patch Set 2: Verified+1

Build Successful

https://qa.coreboot.org/job/coreboot-checkpatch/19327/ : SUCCESS

https://qa.coreboot.org/job/coreboot-gerrit/64538/ : SUCCESS