dm: doc: Fix example
`.priv_data_size` does not exist. I believe the actual structure member
was supposed to be `.priv_auto`.
Reviewed-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
diff --git a/doc/develop/driver-model/design.rst b/doc/develop/driver-model/design.rst
index 3009373..6335459 100644
--- a/doc/develop/driver-model/design.rst
+++ b/doc/develop/driver-model/design.rst
@@ -312,7 +312,7 @@
.name = "demo_shape_drv",
.id = UCLASS_DEMO,
.ops = &shape_ops,
- .priv_data_size = sizeof(struct shape_data),
+ .priv_auto = sizeof(struct shape_data),
};