Change in coreboot[master]: Denverton-NS boards: Factor out common PCI IRQ config

[Angel Pons (Code Review)]

Attention is currently required from: Jeff Daly, Mariusz Szafrański, Tim Wawrzynczak, Suresh Bellampalli, Vanessa Eusebio, Michael Niewöhner, Michal Motyl, Kyösti Mälkki, Patrick Rudolph.
Angel Pons has posted comments on this change. ( https://review.coreboot.org/c/coreboot/+/60102 )

Change subject: Denverton-NS boards: Factor out common PCI IRQ config
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Patch Set 1:

(1 comment)

Patchset:

PS1:
> Kyosti is correct that it is board-specific. […]

Thanks, much appreciated!