Update Freescale MPC85xx ADS/CDS/MDS board config

* Removed some misc environment setup
* Enabled CONFIG_CMDLINE_EDITING

Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
diff --git a/include/configs/MPC8568MDS.h b/include/configs/MPC8568MDS.h
index 2f4bc70..2cf48fb 100644
--- a/include/configs/MPC8568MDS.h
+++ b/include/configs/MPC8568MDS.h
@@ -458,6 +458,7 @@
  * Miscellaneous configurable options
  */
 #define CFG_LONGHELP			/* undef to save memory	*/
+#define CONFIG_CMDLINE_EDITING		/* Command-line editing */
 #define CFG_LOAD_ADDR	0x2000000	/* default load address */
 #define CFG_PROMPT	"=> "		/* Monitor Command Prompt */
 #if defined(CONFIG_CMD_KGDB)