sconfig: rename lapic_cluster -> cpu_cluster

The name lapic_cluster is a bit misleading, since the construct is not local
APIC specific by concept. As implementations and hardware change, be more
generic about our naming. This will allow us to support non-x86 systems without
adding new keywords.

Change-Id: Icd7f5fcf6f54d242eabb5e14ee151eec8d6cceb1
Signed-off-by: Stefan Reinauer <reinauer@google.com>
Signed-off-by: David Hendricks <dhendrix@chromium.org>
Reviewed-on: http://review.coreboot.org/2377
Tested-by: build bot (Jenkins)
Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
diff --git a/src/mainboard/iei/pm-lx2-800-r10/devicetree.cb b/src/mainboard/iei/pm-lx2-800-r10/devicetree.cb
index 5b6d73a..f2166af 100644
--- a/src/mainboard/iei/pm-lx2-800-r10/devicetree.cb
+++ b/src/mainboard/iei/pm-lx2-800-r10/devicetree.cb
@@ -79,7 +79,7 @@
 		end
 	end
 	# APIC cluster is late CPU init.
-	device lapic_cluster 0 on
+	device cpu_cluster 0 on
 		chip cpu/amd/geode_lx
 			device lapic 0 on end
 		end