Match on Iris Pro Graphics 580 and other skylake GT4 ids and correct

Match on Iris Pro Graphics 580 and other skylake GT4 ids and correct
the Iris Graphics P555 GT3 id.

Derived from the following linux commits:

drm/i915/skl: Add SKL GT4 PCI IDs
From Mika Kuoppala
15620206ae87ba9643ffa6f5ddb5471be7192006 in mainline linux

drm/i915: Update SKL SRV GT4 pci ids reference.
From Rodrigo Vivi
5390974f981907cd02d1cb48145b03471279877a in mainline linux

drm/i915/skl: Add missing SKL ID
From Michal Winiarski
ca7a45ba6fb9e7ceca56d10b91db29c2f3451a2e in mainline linux

Expanded version of a diff from ccardenas@.
Reported and tested by Bryan Vyhmeister.
Tested by and ok ccardenas@