mpc83xx: enable command line autocompletion

because it's convenient.

Signed-off-by: Kim Phillips <kim.phillips@freescale.com>
diff --git a/include/configs/MVBLM7.h b/include/configs/MVBLM7.h
index f8b016f..6cc8d58 100644
--- a/include/configs/MVBLM7.h
+++ b/include/configs/MVBLM7.h
@@ -275,6 +275,7 @@
  */
 #define CONFIG_SYS_LONGHELP
 #define CONFIG_CMDLINE_EDITING
+#define CONFIG_AUTO_COMPLETE		/* add autocompletion support   */
 #define CONFIG_SYS_HUSH_PARSER
 #define CONFIG_SYS_PROMPT_HUSH_PS2 "> "