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/via/pc2500e/devicetree.cb b/src/mainboard/via/pc2500e/devicetree.cb
index 34a673b..17bc35e 100644
--- a/src/mainboard/via/pc2500e/devicetree.cb
+++ b/src/mainboard/via/pc2500e/devicetree.cb
@@ -81,7 +81,7 @@
       device pci 12.0 on end			# Ethernet
     end
   end
-  device lapic_cluster 0 on			# APIC cluster
+  device cpu_cluster 0 on			# APIC cluster
     chip cpu/via/c7			# VIA C7
       device lapic 0 on end			# APIC
     end