mb/*: Replace SNB PCI devices with references from chipset.cb

Removing default on/off from mainboard devicetrees is left as a follow-up.

Change-Id: I74c34a97ea4340fb11a0db422a48e1418221627e
Signed-off-by: Arthur Heymans <arthur@aheymans.xyz>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/69502
Reviewed-by: Jakub Czapiga <jacz@semihalf.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Nico Huber <nico.h@gmx.de>
Reviewed-by: Elyes Haouas <ehaouas@noos.fr>
diff --git a/src/mainboard/dell/snb_ivb_workstations/variants/baseboard/devicetree.cb b/src/mainboard/dell/snb_ivb_workstations/variants/baseboard/devicetree.cb
index 62b0b0b..5e52764 100644
--- a/src/mainboard/dell/snb_ivb_workstations/variants/baseboard/devicetree.cb
+++ b/src/mainboard/dell/snb_ivb_workstations/variants/baseboard/devicetree.cb
@@ -6,12 +6,12 @@
 	end
 	device domain 0 on
 
-		device pci 00.0 on end	# Host bridge Host bridge
-		device pci 01.0 on	# PEG1 (blue slot1)
+		device ref host_bridge on end	# Host bridge Host bridge
+		device ref peg10 on	# PEG1 (blue slot1)
 			smbios_slot_desc "SlotTypePciExpressGen3X16" "SlotLengthLong" "SLOT1" "SlotDataBusWidth16X"
 		end
-		device pci 02.0 on  end # Internal graphics VGA controller
-		device pci 06.0 off end # PEG2
+		device ref igd on  end # Internal graphics VGA controller
+		device ref peg60 off end # PEG2
 
 		chip southbridge/intel/bd82x6x # Intel Series 7 Panther Point PCH
 			register "gpe0_en" = "0x00002a46"
@@ -29,25 +29,25 @@
 			register "superspeed_capable_ports" = "0x0000000f"
 			register "xhci_overcurrent_mapping" = "0x08040201"
 			register "xhci_switchable_ports" = "0x0000000f"
-			device pci 14.0 on  end	# USB 3.0 Controller
-			device pci 16.0 off end	# Management Engine Interface 1
-			device pci 16.1 off end	# Management Engine Interface 2
-			device pci 16.2 off end	# Management Engine IDE-R
-			device pci 16.3 off end	# Management Engine KT
-			device pci 19.0 on  end	# Intel Gigabit Ethernet
-			device pci 1a.0 on  end	# USB2 EHCI #2
-			device pci 1b.0 on  end	# High Definition Audio controller
-			device pci 1c.0 off end	# PCIe Port #1
-			device pci 1c.1 off end	# PCIe Port #2
-			device pci 1c.2 off end	# PCIe Port #3
-			device pci 1c.3 off end	# PCIe Port #4
-			device pci 1c.4 off end	# PCIe Port #5
-			device pci 1c.5 off end	# PCIe Port #6
-			device pci 1c.6 off end	# PCIe Port #7
-			device pci 1c.7 off end	# PCIe Port #8
-			device pci 1d.0 on  end	# USB2 EHCI #1
-			device pci 1e.0 off end	# PCI bridge
-			device pci 1f.0 on	# LPC bridge
+			device ref xhci on  end	# USB 3.0 Controller
+			device ref mei1 off end	# Management Engine Interface 1
+			device ref mei2 off end	# Management Engine Interface 2
+			device ref me_ide_r off end	# Management Engine IDE-R
+			device ref me_kt off end	# Management Engine KT
+			device ref gbe on  end	# Intel Gigabit Ethernet
+			device ref ehci2 on  end	# USB2 EHCI #2
+			device ref hda on  end	# High Definition Audio controller
+			device ref pcie_rp1 off end	# PCIe Port #1
+			device ref pcie_rp2 off end	# PCIe Port #2
+			device ref pcie_rp3 off end	# PCIe Port #3
+			device ref pcie_rp4 off end	# PCIe Port #4
+			device ref pcie_rp5 off end	# PCIe Port #5
+			device ref pcie_rp6 off end	# PCIe Port #6
+			device ref pcie_rp7 off end	# PCIe Port #7
+			device ref pcie_rp8 off end	# PCIe Port #8
+			device ref ehci1 on  end	# USB2 EHCI #1
+			device ref pci_bridge off end	# PCI bridge
+			device ref lpc on	# LPC bridge
 				chip drivers/pc80/tpm
 					device pnp 0c31.0 on end
 				end
@@ -77,10 +77,10 @@
 					device pnp 2e.11 off end # PP
 				end
 			end
-			device pci 1f.2 on  end	# SATA Controller 1
-			device pci 1f.3 on  end	# SMBus
-			device pci 1f.5 off end	# SATA Controller 2
-			device pci 1f.6 on  end	# Thermal
+			device ref sata1 on  end	# SATA Controller 1
+			device ref smbus on  end	# SMBus
+			device ref sata2 off end	# SATA Controller 2
+			device ref thermal on  end	# Thermal
 		end
 	end
 end