[M] Change in coreboot[master]: mb/prodrive/hermes: Prevent SGPIO cross-powering 5V rail

[build bot (Jenkins) (Code Review)]

Attention is currently required from: Patrick Rudolph, Christian Walter.

build bot (Jenkins) has posted comments on this change. ( https://review.coreboot.org/c/coreboot/+/66616 )

Change subject: mb/prodrive/hermes: Prevent SGPIO cross-powering 5V rail
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Patch Set 4:

(7 comments)

Commit Message:

Robot Comment from checkpatch (run ID jenkins-coreboot-checkpatch-159867):
https://review.coreboot.org/c/coreboot/+/66616/comment/39adbf00_070aa503 
PS4, Line 8: 
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Robot Comment from checkpatch (run ID jenkins-coreboot-checkpatch-159867):
https://review.coreboot.org/c/coreboot/+/66616/comment/4c738d85_2da5b2ce 
PS4, Line 9: The PCH's SGPIO pads are connected to a buffer chip which is powered from
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Robot Comment from checkpatch (run ID jenkins-coreboot-checkpatch-159867):
https://review.coreboot.org/c/coreboot/+/66616/comment/a3a8d734_3f36742d 
PS4, Line 10: the always-on +3V3_AUX rail. For some reason, if the SGPIO pads remain in
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Robot Comment from checkpatch (run ID jenkins-coreboot-checkpatch-159867):
https://review.coreboot.org/c/coreboot/+/66616/comment/9f177cba_58deeb38 
PS4, Line 11: their native function when a Poseidon system shuts down, a bit of voltage
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Robot Comment from checkpatch (run ID jenkins-coreboot-checkpatch-159867):
https://review.coreboot.org/c/coreboot/+/66616/comment/6da7148b_aedbe6b4 
PS4, Line 12: from the +3V3_AUX-powered buffer chip will leak into the +5V rail through
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Robot Comment from checkpatch (run ID jenkins-coreboot-checkpatch-159867):
https://review.coreboot.org/c/coreboot/+/66616/comment/2f98d534_6b93ae1a 
PS4, Line 15: 
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Robot Comment from checkpatch (run ID jenkins-coreboot-checkpatch-159867):
https://review.coreboot.org/c/coreboot/+/66616/comment/481bdc1d_1f84509e 
PS4, Line 16: This issue has only been observed in S5, but it is very likely other sleep
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