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/lib/of_live.c b/lib/of_live.c
index 05a45ed..2cb0dd9 100644
--- a/lib/of_live.c
+++ b/lib/of_live.c
@@ -257,7 +257,7 @@
  * can be used.
  * @blob: The blob to expand
  * @mynodes: The device_node tree created by the call
- * @return 0 if OK, -ve on error
+ * Return: 0 if OK, -ve on error
  */
 static int unflatten_device_tree(const void *blob,
 				 struct device_node **mynodes)