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/crypto/ace_sha.h b/drivers/crypto/ace_sha.h
index a671b92..ad9e81a 100644
--- a/drivers/crypto/ace_sha.h
+++ b/drivers/crypto/ace_sha.h
@@ -306,7 +306,7 @@
  *			should allocate at least 32 bytes at pOut in advance.
  * @param hash_type SHA1 or SHA256
  *
- * @return		0 on Success, -1 on Failure (Timeout)
+ * Return:		0 on Success, -1 on Failure (Timeout)
  */
 int ace_sha_hash_digest(const uchar * in_addr, uint buflen,
 			uchar * out_addr, uint hash_type);