Change in coreboot[master]: soc/intel/cannonlake: Hook up DPTF device to devicetree

[Nico Huber (Code Review)]

Attention is currently required from:  Felix Singer, Tim Crawford, Patrick Rudolph, Jeremy Soller, Christian Walter, Tim Wawrzynczak, Michael Niewöhner.
Nico Huber has posted comments on this change. ( https://review.coreboot.org/c/coreboot/+/59887 )

Change subject: soc/intel/cannonlake: Hook up DPTF device to devicetree
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Patch Set 6:

(1 comment)

File src/mainboard/google/hatch/variants/baseboard/devicetree.cb:

https://review.coreboot.org/c/coreboot/+/59887/comment/a63ec1c4_2664feac 
PS4, Line 204: 		device pci 04.0 on  end # SA Thermal device
> I prefer setting the devicetree state according to the value of Device4Enable.

This is definitely what we should do. However we shouldn't mix clean-
ups without behavioral changes with fix-ups that change behavior in
one commit. Also, Hatch seems to be the most delicate case. Even if
not in its own commit, it should be mentioned in the commit message.