digsy mtc: Enable command line history.

Signed-off-by: Grzegorz Bernacki <gjb@semihalf.com>
diff --git a/include/configs/digsy_mtc.h b/include/configs/digsy_mtc.h
index 558010f..6ccebfa 100644
--- a/include/configs/digsy_mtc.h
+++ b/include/configs/digsy_mtc.h
@@ -272,6 +272,7 @@
  */
 #define CONFIG_SYS_LONGHELP
 #define CONFIG_AUTO_COMPLETE	1
+#define CONFIG_CMDLINE_EDITING	1
 #define CONFIG_SYS_PROMPT	"=> "
 #define CONFIG_SYS_HUSH_PARSER
 #define CONFIG_SYS_PROMPT_HUSH_PS2	"> "