cli: Add menu for hush parser

For the moment, the menu contains only entry: HUSH_OLD_PARSER which is the
default.
The goal is to prepare the field to add a new hush parser which guarantees
actual behavior is still correct.

Reviewed-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Francis Laniel <francis.laniel@amarulasolutions.com>

cmd/Kconfig

@@ -22,6 +22,19 @@ config HUSH_PARSER
 	  If disabled, you get the old, much simpler behaviour with a somewhat
 	  smaller memory footprint.
 
+menu "Hush flavor to use"
+depends on HUSH_PARSER
+
+config HUSH_OLD_PARSER
+	bool "Use hush old parser"
+	default y
+	help
+	  This option enables the old flavor of hush based on hush Busybox from
+	  2005.
+
+	  It is actually the default U-Boot shell when decided to use hush as shell.
+endmenu
+
 config CMDLINE_EDITING
 	bool "Enable command line editing"
 	default y

common/Makefile

@@ -9,7 +9,7 @@ obj-y += init/
 obj-y += main.o
 obj-y += exports.o
 obj-y += cli_getch.o cli_simple.o cli_readline.o
-obj-$(CONFIG_HUSH_PARSER) += cli_hush.o
+obj-$(CONFIG_HUSH_OLD_PARSER) += cli_hush.o
 obj-$(CONFIG_AUTOBOOT) += autoboot.o
 obj-y += version.o