Change in coreboot[master]: arch/x86: Make postcar TempRamExit call generic

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Change subject: arch/x86: Make postcar TempRamExit call generic
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Patch Set 3: Verified+1

Build Successful

https://qa.coreboot.org/job/coreboot-gerrit/58695/ : SUCCESS

https://qa.coreboot.org/job/coreboot-checkpatch/14075/ : SUCCESS