x86: edison: Enable command line editing

Enable command line editing, because it is extremely convenient.

Signed-off-by: Marek Vasut <marex@denx.de>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
diff --git a/configs/edison_defconfig b/configs/edison_defconfig
index 14b2eec..124f0f6 100644
--- a/configs/edison_defconfig
+++ b/configs/edison_defconfig
@@ -9,7 +9,6 @@
 CONFIG_BOARD_EARLY_INIT_R=y
 CONFIG_LAST_STAGE_INIT=y
 CONFIG_HUSH_PARSER=y
-# CONFIG_CMDLINE_EDITING is not set
 CONFIG_CMD_CPU=y
 CONFIG_CMD_ASKENV=y
 CONFIG_CMD_GREPENV=y