[M] Change in coreboot[master]: device/pciexp_device.c: Do not enable common clock if already active

[Werner Zeh (Code Review)]

Attention is currently required from: Subrata Banik, Paul Menzel.

Werner Zeh has posted comments on this change. ( https://review.coreboot.org/c/coreboot/+/73310 )

Change subject: device/pciexp_device.c: Do not enable common clock if already active
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Patch Set 2:

(1 comment)

Commit Message:

https://review.coreboot.org/c/coreboot/+/73310/comment/a9a6aaf6_d6707343 
PS1, Line 33: and thus execution time
> Depends how fast the link re-training is finished, which in turn depends on the root and endpoint de […]

Done