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/video/rockchip/rk_vop.h b/drivers/video/rockchip/rk_vop.h
index 53a79c0..0528fb2 100644
--- a/drivers/video/rockchip/rk_vop.h
+++ b/drivers/video/rockchip/rk_vop.h
@@ -32,7 +32,7 @@
  * successfully initialised).
  *
  * @dev:	device
- * @return 0 if OK, -ve if something went wrong
+ * Return: 0 if OK, -ve if something went wrong
  */
 int rk_vop_probe(struct udevice *dev);
 
@@ -44,7 +44,7 @@
  *     (32 BPP) x VIDEO_ROCKCHIP_MAX_XRES x VIDEO_ROCKCHIP_MAX_YRES
  *
  * @dev:	device
- * @return 0 (always OK)
+ * Return: 0 (always OK)
  */
 int rk_vop_bind(struct udevice *dev);