Change in coreboot[master]: cpu/amd/amdfam15: Add misc. SMM definitions

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Change subject: cpu/amd/amdfam15: Add misc. SMM definitions
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Patch Set 5:

Build Successful

https://qa.coreboot.org/job/coreboot-gerrit/60757/ : SUCCESS

https://qa.coreboot.org/job/coreboot-checkpatch/15954/ : SUCCESS