Looks like according to the above address the settings should be this:
and the PCIRoot path is this -
PciRoot(0x0)/Pci(0x2,0x1)/Pci(0x0,0x0)/Pci(0x8,0x0)/Pci(0x0,0x0)/Pci(0x5,0x0)/Pci(0x0,0x0)
I am using F2158680 because that should be the one to use. F315 is for a secondary LAN port only.