mkimage: Add -k option to specify key directory

Keys required for signing images will be in a specific directory. Add a
-k option to specify that directory.

Also update the mkimage man page with this information and a clearer list
of available commands.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Marek Vasut <marex@denx.de> (v1)

1 files changed, 1 insertions, 0 deletions

diff --git a/tools/mkimage.h b/tools/mkimage.h
index 03c6c8f523..059e12439f 100644
--- a/tools/mkimage.h
+++ b/tools/mkimage.h
@@ -87,6 +87,7 @@ struct mkimage_params {
 	char *datafile;
 	char *imagefile;
 	char *cmdname;
+	const char *keydir;	/* Directory holding private keys */
 };
 
 /*