[coreboot-gerrit] Change in coreboot[master]: skylake boards: Factor out copy-pasted PIRQ routes

[Paul Menzel (Code Review)]

Paul Menzel has posted comments on this change. ( https://review.coreboot.org/c/coreboot/+/43851 )

Change subject: skylake boards: Factor out copy-pasted PIRQ routes
......................................................................

Patch Set 1:

Just a note, that on the KBL-U board [1], Linux does not list IRQ 11 in `/proc/interrupts` with the vendor firmware.

[1]: https://review.coreboot.org/c/coreboot/+/43760