83xx: Replace CONFIG_MPC83[0-9]X with MPC83[0-9]x

Use the standard lowercase "x" capitalization that other Freescale
architectures use for CPU defines to prevent confusion and errors

Signed-off-by: Peter Tyser <ptyser@xes-inc.com>
Signed-off-by: Kim Phillips <kim.phillips@freescale.com>
diff --git a/include/configs/MPC837XERDB.h b/include/configs/MPC837XERDB.h
index 5f2bd99..2b7d629 100644
--- a/include/configs/MPC837XERDB.h
+++ b/include/configs/MPC837XERDB.h
@@ -26,8 +26,8 @@
  * High Level Configuration Options
  */
 #define CONFIG_E300		1 /* E300 family */
-#define CONFIG_MPC83xx		1 /* MPC83XX family */
-#define CONFIG_MPC837X		1 /* MPC837X CPU specific */
+#define CONFIG_MPC83xx		1 /* MPC83xx family */
+#define CONFIG_MPC837x		1 /* MPC837x CPU specific */
 #define CONFIG_MPC837XERDB	1
 
 #define CONFIG_PCI	1