83xx: Replace CONFIG_MPC83XX with CONFIG_MPC83xx

Use the standard lowercase "xx" 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/MPC837XEMDS.h b/include/configs/MPC837XEMDS.h
index a62d805..8596470 100644
--- a/include/configs/MPC837XEMDS.h
+++ b/include/configs/MPC837XEMDS.h
@@ -25,7 +25,7 @@
  * High Level Configuration Options
  */
 #define CONFIG_E300		1 /* E300 family */
-#define CONFIG_MPC83XX		1 /* MPC83XX family */
+#define CONFIG_MPC83xx		1 /* MPC83xx family */
 #define CONFIG_MPC837X		1 /* MPC837X CPU specific */
 #define CONFIG_MPC837XEMDS	1 /* MPC837XEMDS board specific */