[coreboot-gerrit] Change in coreboot[master]: soc/intel/tigerlake/apci: Only use SCM for ChromeOS

[Tim Crawford (Code Review)]

Attention is currently required from:  Felix Singer, Sean Rhodes, Tim Wawrzynczak, Patrick Rudolph.
Tim Crawford has posted comments on this change. ( https://review.coreboot.org/c/coreboot/+/58798 )

Change subject: soc/intel/tigerlake/apci: Only use SCM for ChromeOS
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Patch Set 9: Code-Review+1

(1 comment)

Patchset:

PS9: 
Tested on system76/oryp8 using mainline Linux 5.15.

Previously on Linux 5.13+, without this change, TBT would fail with:

thunderbolt: probe of 0000:00:0d.2 failed with error -110

With this change, Linux is able to initialize the TBT device and GNOME allows configuring devices. USB 2 & 3 flash drives are detected before and after S3.