[PATCH] Documentation: imd: update information on barebox_update

[Ahmad Fatoum <a.fatoum@pengutronix.de>]

The documentation was added in 2014 and support for checking IMD on
barebox_update came 2 years later, but the docs were never updated.

Bring it up-to-date now.

Signed-off-by: Ahmad Fatoum <a.fatoum@pengutronix.de>
---
 Documentation/user/imd.rst | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/Documentation/user/imd.rst b/Documentation/user/imd.rst
index ce1b90c93648..8173357500bf 100644
--- a/Documentation/user/imd.rst
+++ b/Documentation/user/imd.rst
@@ -54,5 +54,7 @@ example is the Freescale i.MX28.
 IMD and barebox_update
 ----------------------
 
-The IMD informations could well be used to check if an image is suitable for updating
-barebox for a particular board. Support for such a check is planned but not yet implemented.
+The IMD information can be used to check if an image is suitable for updating
+barebox for a particular board. This is done by comparing the OF compatible
+of the running barebox image against the compatible tags in the barebox binary
+being installed.
-- 
2.39.5