imx: hab: Explain that ivt_offset is optional

The ivt_offset parameter is optional for both hab_auth_img_or_fail
and hab_auth_img commands.

Document it in their usage texts to make it clearer.

Signed-off-by: Fabio Estevam <festevam@denx.de>

diff --git a/arch/arm/mach-imx/hab.c b/arch/arm/mach-imx/hab.c
index e7b0388602f51f543e21d58aa3b920b7e01e56cf..27e053ef701c2f0660695cc4f046e235b617df05 100644 (file)
--- a/arch/arm/mach-imx/hab.c
+++ b/arch/arm/mach-imx/hab.c
@@ -703,7 +703,7 @@ U_BOOT_CMD(
                "addr length ivt_offset\n"
                "addr - image hex address\n"
                "length - image hex length\n"
-               "ivt_offset - hex offset of IVT in the image"
+               "ivt_offset - hex offset of IVT in the image (optional)"
          );
 
 U_BOOT_CMD(
@@ -719,7 +719,7 @@ U_BOOT_CMD(
                "addr length ivt_offset\n"
                "addr - image hex address\n"
                "length - image hex length\n"
-               "ivt_offset - hex offset of IVT in the image"
+               "ivt_offset - hex offset of IVT in the image (optional)"
          );
 
 U_BOOT_CMD(