[coreboot-gerrit] Change in coreboot[master]: soc/intel: Add STM Support

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Change subject: soc/intel: Add STM Support
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Patch Set 1:

The large CL has now been spit into two: (1) the basic STM setup code (security/intel/stm) and (2) soc/intel where get_pmbase was added to platforms that did not have it