[PATCH] kconfig: config script: add a little user help

[Randy Dunlap]

Give the user a clue about the problem along with the 35 lines of
usage/help text.

Signed-off-by: Randy Dunlap <rdun...@infradead.org>
Cc: Andi Kleen <a...@linux.intel.com>
Cc: Masahiro Yamada <masahi...@kernel.org>
Cc: linux-kbu...@vger.kernel.org
---
 scripts/config |    1 +
 1 file changed, 1 insertion(+)

--- linux-next-20201218.orig/scripts/config
+++ linux-next-20201218/scripts/config
@@ -223,6 +223,7 @@ while [ "$1" != "" ] ; do
                ;;
 
        *)
+               echo "bad cmd: $CMD"
                usage
                ;;
        esac