[coreboot-gerrit] Change in coreboot[master]: cpu/x86/smm/ssm_stub: Add x86_64 support

[ron minnich (Code Review)]

ron minnich has posted comments on this change. ( https://review.coreboot.org/c/coreboot/+/37392 )

Change subject: cpu/x86/smm/ssm_stub: Add x86_64 support
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Patch Set 2:

This should be abandoned? https://review.coreboot.org/c/coreboot/+/33234 does the same thing.