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/mips/mach-octeon/include/mach/bootoct_cmd.h b/arch/mips/mach-octeon/include/mach/bootoct_cmd.h
index 657698b..0e21b3a 100644
--- a/arch/mips/mach-octeon/include/mach/bootoct_cmd.h
+++ b/arch/mips/mach-octeon/include/mach/bootoct_cmd.h
@@ -42,7 +42,7 @@
  * @param cmd			command type
  * @param[out] boot_args	parsed values
  *
- * @return number of arguments parsed
+ * Return: number of arguments parsed
  */
 int octeon_parse_bootopts(int argc, char *const argv[],
 			  enum octeon_boot_cmd_type cmd,