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/arch/arm/include/asm/arch-tegra/sys_proto.h b/arch/arm/include/asm/arch-tegra/sys_proto.h
index 62e1c7b..c3a2673 100644
--- a/arch/arm/include/asm/arch-tegra/sys_proto.h
+++ b/arch/arm/include/asm/arch-tegra/sys_proto.h
@@ -12,7 +12,7 @@
 /**
  * tegra_board_id() - Get the board iD
  *
- * @return a board ID, or -ve on error
+ * Return: a board ID, or -ve on error
  */
 int tegra_board_id(void);
 
@@ -20,14 +20,14 @@
  * tegra_lcd_pmic_init() - Set up the PMIC for a board
  *
  * @board_id: Board ID which may be used to select LCD type
- * @return 0 if OK, -ve on error
+ * Return: 0 if OK, -ve on error
  */
 int tegra_lcd_pmic_init(int board_id);
 
 /**
  * nvidia_board_init() - perform any board-specific init
  *
- * @return 0 if OK, -ve on error
+ * Return: 0 if OK, -ve on error
  */
 int nvidia_board_init(void);