mb/lenovo/x220: Remove superfluous comments related to PCI devices

Since all devicetrees from lenovo/x220 are using the reference names for
PCI devices now, remove the equivalent comments documenting their
function.

Change-Id: Ic8bff0516811371e1fbb72765c8d03812a689701
Signed-off-by: Felix Singer <felixsinger@posteo.net>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/79940
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Patrick Rudolph <patrick.rudolph@9elements.com>
diff --git a/src/mainboard/lenovo/x220/devicetree.cb b/src/mainboard/lenovo/x220/devicetree.cb
index 866d6c3..233f690 100644
--- a/src/mainboard/lenovo/x220/devicetree.cb
+++ b/src/mainboard/lenovo/x220/devicetree.cb
@@ -38,9 +38,9 @@
 	device domain 0 on
 		subsystemid 0x17aa 0x21db inherit
 
-		device ref host_bridge on end # host bridge
-		device ref peg10 off end # PCIe Bridge for discrete graphics
-		device ref igd on end # vga controller
+		device ref host_bridge on end
+		device ref peg10 off end
+		device ref igd on end
 
 		chip southbridge/intel/bd82x6x # Intel Series 6 Cougar Point PCH
 			# GPI routing
@@ -68,37 +68,37 @@
 			register "spi_uvscc" = "0x2005"
 			register "spi_lvscc" = "0x2005"
 
-			device ref mei1 on  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 mei1 on  end
+			device ref mei2 off end
+			device ref me_ide_r off end
+			device ref me_kt off end
 			device ref gbe on
 				subsystemid 0x17aa 0x21ce
-			end # Intel Gigabit Ethernet
-			device ref ehci2 on end # USB2 EHCI #2
-			device ref hda on end # High Definition Audio
-			device ref pcie_rp1 off end # PCIe Port #1
-			device ref pcie_rp2 on # PCIe Port #2 (wlan)
+			end
+			device ref ehci2 on end
+			device ref hda on end
+			device ref pcie_rp1 off end
+			device ref pcie_rp2 on
 				smbios_slot_desc "SlotTypeM2Socket1_SD" "SlotLengthShort"
 					"WIFI" "SlotDataBusWidth1X"
 			end
-			device ref pcie_rp3 off end # PCIe Port #3
+			device ref pcie_rp3 off end
 			device ref pcie_rp4 on
 				smbios_slot_desc "7" "3" "ExpressCard Slot" "8"
-			end # PCIe Port #4
+			end
 			device ref pcie_rp5 on
 				chip drivers/ricoh/rce822
 					register "sdwppol" = "1"
 					register "disable_mask" = "0x87"
 					device pci 00.0 on end
 				end
-			end # PCIe Port #5 (SD)
-			device ref pcie_rp6 off end # PCIe Port #6
-			device ref pcie_rp7 on end # PCIe Port #7 Optional XHCI controller
-			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
+			end
+			device ref pcie_rp6 off end
+			device ref pcie_rp7 on end # Optional XHCI controller
+			device ref pcie_rp8 off end
+			device ref ehci1 on end
+			device ref pci_bridge off end
+			device ref lpc on
 				chip ec/lenovo/pmh7
 					device pnp ff.1 on end # dummy
 					register "backlight_enable" = "true"
@@ -149,8 +149,8 @@
 					register "wwan_gpio_num" = "70"
 					register "wwan_gpio_lvl" = "0"
 				end
-			end # LPC bridge
-			device ref sata1 on end # SATA Controller 1
+			end
+			device ref sata1 on end
 			device ref smbus on
 				# eeprom, 8 virtual devices, same chip
 				chip drivers/i2c/at24rf08c
@@ -163,9 +163,9 @@
 					device i2c 5e on end
 					device i2c 5f on end
 				end
-			end # SMBus
-			device ref sata2 off end # SATA Controller 2
-			device ref thermal on end # Thermal
+			end
+			device ref sata2 off end
+			device ref thermal on end
 		end
 	end
 end