src/cpu: Capitalize CPU

Change-Id: I58d5c16de796a91fa14d8db78722024266c09a94
Signed-off-by: Elyes HAOUAS <ehaouas@noos.fr>
Reviewed-on: https://review.coreboot.org/15934
Tested-by: build bot (Jenkins)
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Reviewed-by: Martin Roth <martinroth@google.com>
diff --git a/src/cpu/intel/Makefile.inc b/src/cpu/intel/Makefile.inc
index bd39039..536b40e 100644
--- a/src/cpu/intel/Makefile.inc
+++ b/src/cpu/intel/Makefile.inc
@@ -1,5 +1,5 @@
 # Note: From here on down, we are socket-centric. Socket choice determines
-# what other cpu files are included.
+# what other CPU files are included.
 #
 # Therefore: ONLY include Makefile.inc from socket directories!