'-device vmcoreinfo' is replaced by '-object vmcore-info'.

Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
---
 docs/about/deprecated.rst | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/docs/about/deprecated.rst b/docs/about/deprecated.rst
index d6809f94ea1..57a3d734081 100644
--- a/docs/about/deprecated.rst
+++ b/docs/about/deprecated.rst
@@ -79,6 +79,11 @@ described with -smp are supported by the target machine.
 
 Use ``-run-with user=..`` instead.
 
+``-device vmcoreinfo`` (since 10.0)
+'''''''''''''''''''''''''''''''''''
+
+Use ``-object vmcore-info`` instead.
+
 
 User-mode emulator command line arguments
 -----------------------------------------
-- 
2.47.1