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-aspeed/wdt.h b/arch/arm/include/asm/arch-aspeed/wdt.h
index fb04d41..6fac7ff 100644
--- a/arch/arm/include/asm/arch-aspeed/wdt.h
+++ b/arch/arm/include/asm/arch-aspeed/wdt.h
@@ -84,7 +84,7 @@
  * gets Reset Mode value from it.
  *
  * @flags: flags parameter passed into wdt_reset or wdt_start
- * @return Reset Mode value
+ * Return: Reset Mode value
  */
 u32 ast_reset_mode_from_flags(ulong flags);
 
@@ -93,7 +93,7 @@
  * gets Reset Mask value from it. Reset Mask is only supported on ast2500
  *
  * @flags: flags parameter passed into wdt_reset or wdt_start
- * @return Reset Mask value
+ * Return: Reset Mask value
  */
 u32 ast_reset_mask_from_flags(ulong flags);