Change in coreboot[master]: vendorcode/intel/fsp/tigerlake: Add tigerlake FSP header file template

[Nathaniel L Desimone (Code Review)]

Nathaniel L Desimone has posted comments on this change. ( https://review.coreboot.org/c/coreboot/+/36243 )

Change subject: vendorcode/intel/fsp/tigerlake: Add tigerlake FSP header file template
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Patch Set 4:

As the maintainer for github.com/IntelFSP, I would prefer that "early" UPD headers like this that solely exist to enable compilation of coreboot for unreleased SOCs be kept here in vendorcode. After the SOC is released and FSP binaries are posted at github.com/IntelFSP, I would prefer that the copy of the UPD headers here in vendorcode is deleted and the official headers provided at github.com/IntelFSP are used.

The reason is github.com/IntelFSP should only contain finished work that is ready for production use. The early headers won't meet that standard of quality.