Handle BIOS that reference disabled PCI Interrupt Link Devices
http://bugme.osdl.org/show_bug.cgi?id=1581

Clean up VIA _CRS = 0 BIOS workaround

Handle BIOS returning _CRS outside _PRS
http://bugme.osdl.org/show_bug.cgi?id=2567

delete now unused _SRS retry code
disable redundant console messages