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/include/of_live.h b/include/of_live.h
index b8561f5..b2b9679 100644
--- a/include/of_live.h
+++ b/include/of_live.h
@@ -16,7 +16,7 @@
  *
  * @fdt_blob: Input tree to convert
  * @rootp: Returns live tree that was created
- * @return 0 if OK, -ve on error
+ * Return: 0 if OK, -ve on error
  */
 int of_live_build(const void *fdt_blob, struct device_node **rootp);