sh: r2dplus: Enable HUSH

Enable richer HUSH shell to make working with the board more pleasant.

Signed-off-by: Marek Vasut <marek.vasut+renesas@gmail.com>
Cc: Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
diff --git a/configs/r2dplus_defconfig b/configs/r2dplus_defconfig
index 8ae4ba1..900428a 100644
--- a/configs/r2dplus_defconfig
+++ b/configs/r2dplus_defconfig
@@ -7,8 +7,7 @@
 CONFIG_BOOTDELAY=-1
 CONFIG_USE_BOOTARGS=y
 CONFIG_BOOTARGS="console=ttySC0,115200"
-# CONFIG_CMDLINE_EDITING is not set
-# CONFIG_AUTO_COMPLETE is not set
+CONFIG_HUSH_PARSER=y
 CONFIG_CMD_IMLS=y
 CONFIG_CMD_DM=y
 CONFIG_CMD_IDE=y