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/net/pfe_eth/pfe_hw.c b/drivers/net/pfe_eth/pfe_hw.c
index 722f5c2..4db6f31 100644
--- a/drivers/net/pfe_eth/pfe_hw.c
+++ b/drivers/net/pfe_eth/pfe_hw.c
@@ -128,7 +128,7 @@
  * @param[in] addr		PMEM read address (must be aligned on size)
  * @param[in] size		Number of bytes to read (maximum 4, must not
  *				cross 32bit boundaries)
- * @return			the data read (in PE endianness, i.e BE).
+ * Return:			the data read (in PE endianness, i.e BE).
  */
 u32 pe_pmem_read(int id, u32 addr, u8 size)
 {
@@ -176,7 +176,7 @@
  * @param[in] addr		DMEM read address (must be aligned on size)
  * @param[in] size		Number of bytes to read (maximum 4, must not
  *				cross 32bit boundaries)
- * @return			the data read (in PE endianness, i.e BE).
+ * Return:			the data read (in PE endianness, i.e BE).
  */
 u32 pe_dmem_read(int id, u32 addr, u8 size)
 {
@@ -222,7 +222,7 @@
  * through indirect access registers.
  * @param[in] addr	Address to read from (must be aligned on size)
  * @param[in] size	Number of bytes to read (1, 2 or 4)
- * @return		the read data
+ * Return:		the read data
  */
 static u32 class_bus_read(u32 addr, u8 size)
 {