mb/asus/p8h61-m_lx3_r2_0: Extract overridetree

Tested with BUILD_TIMELESS=1, coreboot.rom for the Asus P8H61-M LX3 R2.0
remains identical when not adding the .config file in it.

Change-Id: I989f69d000a38a7b1f4e0832341aa347cc0bfe98
Signed-off-by: Angel Pons <th3fanbus@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/54387
Reviewed-by: Patrick Georgi <pgeorgi@google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
diff --git a/src/mainboard/asus/h61-series/devicetree.cb b/src/mainboard/asus/h61-series/devicetree.cb
new file mode 100644
index 0000000..07c0a86
--- /dev/null
+++ b/src/mainboard/asus/h61-series/devicetree.cb
@@ -0,0 +1,50 @@
+## 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
+		device pci 00.0 on end		# Host bridge
+		device pci 01.0 on end		# PEG
+		device pci 02.0 on end		# iGPU
+
+		chip southbridge/intel/bd82x6x
+			register "c2_latency" = "0x0065"
+			register "sata_port_map" = "0x33"
+			register "spi_lvscc" = "0x2005"
+			register "spi_uvscc" = "0x2005"
+
+			device pci 16.0 on  end		# MEI #1
+			device pci 16.1 off end		# MEI #2
+			device pci 16.2 off end		# ME IDE-R
+			device pci 16.3 off end		# ME KT
+			device pci 19.0 off end		# Intel GbE
+			device pci 1a.0 on  end		# EHCI #2
+			device pci 1b.0 on  end		# HD Audio
+
+			device pci 1c.0 off end		# RP #1
+			device pci 1c.1 off end		# RP #2
+			device pci 1c.2 off end		# RP #3
+			device pci 1c.3 off end		# RP #4
+			device pci 1c.4 off end		# RP #5
+			device pci 1c.5 off end		# RP #6
+			device pci 1c.6 off end		# RP #7
+			device pci 1c.7 off end		# RP #8
+
+			device pci 1d.0 on  end		# EHCI #1
+			device pci 1e.0 off end		# PCI bridge
+			device pci 1f.0 on  end		# LPC bridge
+			device pci 1f.2 on  end		# SATA (AHCI)
+			device pci 1f.3 on  end		# SMBus
+			device pci 1f.5 off end		# SATA (Legacy)
+			device pci 1f.6 off end		# Thermal
+		end
+	end
+end