Change in coreboot[master]: x86/Kconfig: Add config to select Intel infield microcode update feature

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Change subject: x86/Kconfig: Add config to select Intel infield microcode update feature
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Patch Set 1: Verified+1

Build Successful

https://qa.coreboot.org/job/coreboot-gerrit/71050/ : SUCCESS

https://qa.coreboot.org/job/coreboot-checkpatch/25226/ : SUCCESS