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/spi.h b/include/spi.h
index dc3b211..fa9ab12 100644
--- a/include/spi.h
+++ b/include/spi.h
@@ -561,7 +561,7 @@
  * @cs:		Chip select to look for
  * @busp:	Returns bus device
  * @devp:	Return slave device
- * @return 0 if found, -ENODEV on error
+ * Return: 0 if found, -ENODEV on error
  */
 int spi_find_bus_and_cs(int busnum, int cs, struct udevice **busp,
 			struct udevice **devp);
@@ -586,7 +586,7 @@
  * @dev_name:	Name of the new device thus created
  * @busp:	Returns bus device
  * @devp:	Return slave device
- * @return 0 if found, -ve on error
+ * Return: 0 if found, -ve on error
  */
 int spi_get_bus_and_cs(int busnum, int cs, int speed, int mode,
 			const char *drv_name, const char *dev_name,
@@ -595,7 +595,7 @@
 /**
  * spi_chip_select() - Get the chip select for a slave
  *
- * @return the chip select this slave is attached to
+ * Return: the chip select this slave is attached to
  */
 int spi_chip_select(struct udevice *slave);
 
@@ -605,7 +605,7 @@
  * @bus:	SPI bus to search
  * @cs:		Chip select to look for
  * @devp:	Returns the slave device if found
- * @return 0 if found, -EINVAL if cs is invalid, -ENODEV if no device attached,
+ * Return: 0 if found, -EINVAL if cs is invalid, -ENODEV if no device attached,
  *	   other -ve value on error
  */
 int spi_find_chip_select(struct udevice *bus, int cs, struct udevice **devp);
@@ -630,7 +630,7 @@
  * @bus:	The SPI bus
  * @cs:		The chip select (0..n-1)
  * @info:	Returns information about the chip select, if valid
- * @return 0 if OK (and @info is set up), -ENODEV if the chip select
+ * Return: 0 if OK (and @info is set up), -ENODEV if the chip select
  *	   is invalid, other -ve value on error
  */
 int spi_cs_info(struct udevice *bus, uint cs, struct spi_cs_info *info);
@@ -649,7 +649,7 @@
  * @bus:	SPI bus requesting the emulator
  * @slave:	SPI slave device requesting the emulator
  * @emuip:	Returns pointer to emulator
- * @return 0 if OK, -ve on error
+ * Return: 0 if OK, -ve on error
  */
 int sandbox_spi_get_emul(struct sandbox_state *state,
 			 struct udevice *bus, struct udevice *slave,
@@ -715,7 +715,7 @@
  * @map_sizep:	Returns size of mapped SPI
  * @offsetp:	Returns start offset of SPI flash where the map works
  *	correctly (offsets before this are not visible)
- * @return 0 if OK, -ENOSYS if no operation, -EFAULT if memory mapping is not
+ * Return: 0 if OK, -ENOSYS if no operation, -EFAULT if memory mapping is not
  *	available
  */
 int dm_spi_get_mmap(struct udevice *dev, ulong *map_basep, uint *map_sizep,