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/tpm/cr50_i2c.c b/drivers/tpm/cr50_i2c.c
index 7a2b5a4..f8c3087 100644
--- a/drivers/tpm/cr50_i2c.c
+++ b/drivers/tpm/cr50_i2c.c
@@ -467,7 +467,7 @@
  * TPM finished reset processing.
  *
  * @dev: Cr50 device
- * @return 0 if OK, -EPERM if locality could not be taken
+ * Return: 0 if OK, -EPERM if locality could not be taken
  */
 static int process_reset(struct udevice *dev)
 {
diff --git a/drivers/tpm/sandbox_common.h b/drivers/tpm/sandbox_common.h
index e822a20..f423c50 100644
--- a/drivers/tpm/sandbox_common.h
+++ b/drivers/tpm/sandbox_common.h
@@ -57,7 +57,7 @@
  * number used by the sandbox emulation.
  *
  * @index: Index to use (FIRMWARE_NV_INDEX, etc.)
- * @return associated space (enum sandbox_nv_space)
+ * Return: associated space (enum sandbox_nv_space)
  */
 int sb_tpm_index_to_seq(uint index);
 
diff --git a/drivers/tpm/tpm2_tis_spi.c b/drivers/tpm/tpm2_tis_spi.c
index 58b6f33..de9cf8f 100644
--- a/drivers/tpm/tpm2_tis_spi.c
+++ b/drivers/tpm/tpm2_tis_spi.c
@@ -60,7 +60,7 @@
  * NOTE: TPM is big-endian for multi-byte values. Multi-byte
  * values have to be swapped.
  *
- * @return -EIO on error, 0 on success.
+ * Return: -EIO on error, 0 on success.
  */
 static int tpm_tis_spi_xfer(struct udevice *dev, u32 addr, const u8 *out,
 			    u8 *in, u16 len)
diff --git a/drivers/tpm/tpm_atmel_twi.c b/drivers/tpm/tpm_atmel_twi.c
index fa4fbec..c059ea4 100644
--- a/drivers/tpm/tpm_atmel_twi.c
+++ b/drivers/tpm/tpm_atmel_twi.c
@@ -48,7 +48,7 @@
  * @dev:        Device to check
  * @buf:        Buffer to put the string
  * @size:       Maximum size of buffer
- * @return length of string, or -ENOSPC it no space
+ * Return: length of string, or -ENOSPC it no space
  */
 static int tpm_atmel_twi_get_desc(struct udevice *dev, char *buf, int size)
 {