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/lib/tpm-utils.h b/lib/tpm-utils.h
index d680d14..a519e18 100644
--- a/lib/tpm-utils.h
+++ b/lib/tpm-utils.h
@@ -31,7 +31,7 @@
  * @param size		size of output string
  * @param format	format string
  * @param ...		data points
- * @return 0 on success, non-0 on error
+ * Return: 0 on success, non-0 on error
  */
 int pack_byte_string(u8 *str, size_t size, const char *format, ...);
 
@@ -46,7 +46,7 @@
  * @param size		size of output string
  * @param format	format string
  * @param ...		data points
- * @return 0 on success, non-0 on error
+ * Return: 0 on success, non-0 on error
  */
 int unpack_byte_string(const u8 *str, size_t size, const char *format, ...);
 
@@ -54,7 +54,7 @@
  * Get TPM command size.
  *
  * @param command	byte string of TPM command
- * @return command size of the TPM command
+ * Return: command size of the TPM command
  */
 u32 tpm_command_size(const void *command);
 
@@ -62,7 +62,7 @@
  * Get TPM response return code, which is one of TPM_RESULT values.
  *
  * @param response	byte string of TPM response
- * @return return code of the TPM response
+ * Return: return code of the TPM response
  */
 u32 tpm_return_code(const void *response);
 
@@ -76,7 +76,7 @@
  * @param size_ptr	output buffer size (input parameter) and TPM
  *			response length (output parameter); this parameter
  *			is a bidirectional
- * @return return code of the TPM response
+ * Return: return code of the TPM response
  */
 u32 tpm_sendrecv_command(struct udevice *dev, const void *command,
 			 void *response, size_t *size_ptr);