mb/lenovo/t520: Convert remaining PCI numbers into reference names

Change-Id: I18ce899516fd38b21ded1e3144aa22e705c534b8
Signed-off-by: Felix Singer <felixsinger@posteo.net>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/79965
Reviewed-by: Patrick Rudolph <patrick.rudolph@9elements.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

src/mainboard/lenovo/t520/devicetree.cb

@@ -144,8 +144,8 @@ chip northbridge/intel/sandybridge
 					device i2c 5f on end
 				end
 			end # SMBus
-			device pci 1f.5 off end # IDE controller
+			device ref sata2 off end # IDE controller
-			device pci 1f.6 off end # Thermal controller
+			device ref thermal off end # Thermal controller
 		end
 	end
 end

src/mainboard/lenovo/t520/variants/t520/overridetree.cb

@@ -2,7 +2,7 @@ chip northbridge/intel/sandybridge
 	register "spd_addresses" = "{0x50, 0, 0x51, 0}"
 	device domain 0 on
 		chip southbridge/intel/bd82x6x # Intel Series 6 Cougar Point PCH
-			device pci 1f.0 on # LPC bridge
+			device ref lpc on # LPC bridge
 				chip ec/lenovo/h8
 					device pnp ff.2 on end # dummy
 					register "has_wwan_detection" = "1"

src/mainboard/lenovo/t520/variants/w520/overridetree.cb

@@ -2,7 +2,7 @@ chip northbridge/intel/sandybridge
 	register "spd_addresses" = "{0x50, 0x52, 0x51, 0x53}"
 	device domain 0 on
 		chip southbridge/intel/bd82x6x # Intel Series 6 Cougar Point PCH
-			device pci 1c.6 on end # PCIe Port #7 USB 3.0
+			device ref pcie_rp7 on end # PCIe Port #7 USB 3.0
 		end
 	end
 end