nb/intel/sandybridge: Add a chipset devicetree

This only moves CPU configuration to a common place. Other PCI devices
can be done in follow-ups.

Change-Id: I9c5b6f25b779e28b6719cf70455ff0f1a916ad87
Signed-off-by: Arthur Heymans <arthur@aheymans.xyz>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/56912
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
diff --git a/src/mainboard/supermicro/x9sae/devicetree.cb b/src/mainboard/supermicro/x9sae/devicetree.cb
index 05a187e..ed011c1 100644
--- a/src/mainboard/supermicro/x9sae/devicetree.cb
+++ b/src/mainboard/supermicro/x9sae/devicetree.cb
@@ -6,15 +6,7 @@
 	register "gpu_dp_c_hotplug" = "4"
 	register "gpu_dp_d_hotplug" = "4"
 	register "gpu_panel_power_cycle_delay" = "4"
-	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 0x15d9 0x0644 inherit