doc: replace @return by Return:

Sphinx expects Return: and not @return to indicate a return value.

find . -name '*.c' -exec \
sed -i 's/^\(\s\)\*\(\s*\)@return\(\s\)/\1*\2Return:\3/' {} \;

find . -name '*.h' -exec \
sed -i 's/^\(\s\)\*\(\s*\)@return\(\s\)/\1*\2Return:\3/' {} \;

Signed-off-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com>
diff --git a/drivers/core/root.c b/drivers/core/root.c
index 815173f..e3f8795 100644
--- a/drivers/core/root.c
+++ b/drivers/core/root.c
@@ -257,7 +257,7 @@
  * @node: Node to scan
  * @pre_reloc_only: If true, bind only drivers with the DM_FLAG_PRE_RELOC
  * flag. If false bind all drivers.
- * @return 0 if OK, -ve on error
+ * Return: 0 if OK, -ve on error
  */
 static int dm_scan_fdt_node(struct udevice *parent, ofnode parent_node,
 			    bool pre_reloc_only)