Change in coreboot[master]: sb/intel/common: Refactor _PRT generation to support GSI-based tables

[Tim Wawrzynczak (Code Review)]

Attention is currently required from: Nico Huber, Furquan Shaikh, Angel Pons, Patrick Rudolph.
Tim Wawrzynczak has posted comments on this change. ( https://review.coreboot.org/c/coreboot/+/50857 )

Change subject: sb/intel/common: Refactor _PRT generation to support GSI-based tables
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Patch Set 20:

(3 comments)

Commit Message:

https://review.coreboot.org/c/coreboot/+/50857/comment/d878b554_44868bf7 
PS20, Line 13:
> Works for me, with the 1:1 mapping for northbridge devices fixed.

Thanks Nico!

File src/southbridge/intel/common/rcba_pirq.h:

https://review.coreboot.org/c/coreboot/+/50857/comment/447fd3c0_b6950722 
PS20, Line 7: #include "acpi_pirq_gen.h"
> Is this needed?

Not anymore 😊

File src/southbridge/intel/common/rcba_pirq.c:

https://review.coreboot.org/c/coreboot/+/50857/comment/fe15f22b_82359f36 
PS20, Line 36: 		return (enum pirq)pci_pin;
> This will break due to the changed pirq enum.

Done