dm: Fix parameter description of dev_read_name()

The comments of dev_read_name() wrongly describe "node" as its
parameter.

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
diff --git a/include/dm/read.h b/include/dm/read.h
index 62d4be6..6ecd062 100644
--- a/include/dm/read.h
+++ b/include/dm/read.h
@@ -227,7 +227,7 @@
 /**
  * dev_read_name() - get the name of a device's node
  *
- * @node: valid node to look up
+ * @dev: Device to read from
  * @return name of node
  */
 const char *dev_read_name(struct udevice *dev);