mb/asus/p8h61-m_lx: Switch to overridetree setup

Tested with BUILD_TIMELESS=1, coreboot.rom for the Asus P8H61-M LX
remains identical when not adding the .config file in it.

Change-Id: I3142773e8c8f11f27f7926933097ffde8ba241e2
Signed-off-by: Angel Pons <th3fanbus@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/54390
Reviewed-by: Patrick Georgi <pgeorgi@google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
diff --git a/src/mainboard/asus/h61-series/Kconfig b/src/mainboard/asus/h61-series/Kconfig
index 6b831e4..529dd11 100644
--- a/src/mainboard/asus/h61-series/Kconfig
+++ b/src/mainboard/asus/h61-series/Kconfig
@@ -32,22 +32,10 @@
 	default "P8H61-M LX3 R2.0" if BOARD_ASUS_P8H61_M_LX3_R2_0
 	default "P8H61-M PRO"      if BOARD_ASUS_P8H61_M_PRO
 
-# TODO: remove once all boards use overridetrees
-if !BOARD_ASUS_P8H61_M_LX
-
 config OVERRIDE_DEVICETREE
 	string
 	default "variants/\$(CONFIG_VARIANT_DIR)/overridetree.cb"
 
-endif
-if BOARD_ASUS_P8H61_M_LX
-
-config DEVICETREE
-	string
-	default "variants/\$(CONFIG_VARIANT_DIR)/devicetree.cb"
-
-endif
-
 config CMOS_DEFAULT_FILE
 	default "src/mainboard/\$(MAINBOARDDIR)/variants/\$(CONFIG_VARIANT_DIR)/cmos.default"
 
diff --git a/src/mainboard/asus/h61-series/variants/p8h61-m_lx/devicetree.cb b/src/mainboard/asus/h61-series/variants/p8h61-m_lx/overridetree.cb
similarity index 71%
rename from src/mainboard/asus/h61-series/variants/p8h61-m_lx/devicetree.cb
rename to src/mainboard/asus/h61-series/variants/p8h61-m_lx/overridetree.cb
index 05b8e38..aa9f8c8 100644
--- a/src/mainboard/asus/h61-series/variants/p8h61-m_lx/devicetree.cb
+++ b/src/mainboard/asus/h61-series/variants/p8h61-m_lx/overridetree.cb
@@ -1,36 +1,11 @@
 ## SPDX-License-Identifier: GPL-2.0-or-later
 
 chip northbridge/intel/sandybridge
-	device cpu_cluster 0 on
-		chip cpu/intel/model_206ax
-			register "acpi_c1" = "1"
-			register "acpi_c2" = "3"
-			register "acpi_c3" = "5"
-			device lapic 0 on end
-			device lapic 0xacac off end
-		end
-	end
-
 	device domain 0 on
 		subsystemid 0x1043 0x844d inherit
-
-		device pci 00.0 on end # Host bridge
-		device pci 01.0 on end # PCIe bridge for discrete graphics
-		device pci 02.0 on end # VGA controller
-
 		chip southbridge/intel/bd82x6x
-			register "c2_latency" = "0x0065"
 			register "gen1_dec" = "0x00000295" # Super I/O HWM
-			register "sata_port_map" = "0x33"
-			register "spi_lvscc" = "0x2005"
-			register "spi_uvscc" = "0x2005"
 
-			device pci 16.0 on  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 off end # Intel Gigabit Ethernet
-			device pci 1a.0 on  end # USB2 EHCI #2
 			device pci 1b.0 on      # HD audio controller
 				subsystemid 0x1043 0x8445
 			end
@@ -48,8 +23,7 @@
 			device pci 1c.5 off end # Unused PCIe port
 			device pci 1c.6 off end # Unused PCIe port
 			device pci 1c.7 off end # Unused PCIe port
-			device pci 1d.0 on  end # USB2 EHCI #1
-			device pci 1e.0 off end # PCI bridge
+
 			device pci 1f.0 on      # LPC bridge
 				chip superio/nuvoton/nct6776
 					device pnp 2e.0   off end # Floppy
@@ -106,10 +80,6 @@
 					device pnp 2e.17  off end # GPIOA
 				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 off end # Thermal
 		end
 	end
 end