[coreboot-gerrit] Change in coreboot[master]: mb/prodrive/hermes: Fix PCIe ClkSrc configuration

[Patrick Rudolph (Code Review)]

Attention is currently required from: Christian Walter, Angel Pons, Michael Niewöhner, Patrick Rudolph.
Patrick Rudolph has posted comments on this change. ( https://review.coreboot.org/c/coreboot/+/58065 )

Change subject: mb/prodrive/hermes: Fix PCIe ClkSrc configuration
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Patch Set 2:

(2 comments)

Commit Message:

https://review.coreboot.org/c/coreboot/+/58065/comment/467b17e2_a4851aa5 
PS2, Line 10: Apparently, FSP does not turn off unused PCIe clock sources when using
I cannot find that code in FSP, where does it check for SPS?

https://review.coreboot.org/c/coreboot/+/58065/comment/4fa32c8b_cd532426 
PS2, Line 12: firmware.
It's more likely that the 1:1 mapping of "SRC$ CLKREQ#" to pin in the new IFD causes problems.

The original IFD had the "SRC$ CLKREQ#" to pin mapping as described in the devicetree.