[coreboot-gerrit] Change in coreboot[master]: drivers/intel/dptf: Add OEM variables support

[Tim Wawrzynczak (Code Review)]

Attention is currently required from: Lance Zhao, Furquan Shaikh, Justin TerAvest, Sumeet R Pawnikar, Todd Broch, Aaron Durbin, Patrick Rudolph, Karthik Ramasubramanian.
Tim Wawrzynczak has posted comments on this change. ( https://review.coreboot.org/c/coreboot/+/50127 )

Change subject: drivers/intel/dptf: Add OEM variables support
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Patch Set 14:

(1 comment)

File src/drivers/intel/dptf/dptf.c:

https://review.coreboot.org/c/coreboot/+/50127/comment/5631e11c_9295f35e 
PS13, Line 125: get_STA_value(config, DPTF_IETM)
this will write a _STA that returns ACPI_STATUS_DEVICE_ALL_OFF (0);

the function get_STA_value checks above to see if the participant is used in any policies; if it is used in a policy, then it returns true, otherwise false; since IETM is not used in any policies, this should return false