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/clk/sunxi.h b/include/clk/sunxi.h
index d4ad5fd..a2239b9 100644
--- a/include/clk/sunxi.h
+++ b/include/clk/sunxi.h
@@ -91,7 +91,7 @@
  *
  * @dev:       reset device
  * @count:     reset count
- * @return 0 success, or error value
+ * Return: 0 success, or error value
  */
 int sunxi_reset_bind(struct udevice *dev, ulong count);