Rename psa_pake_data_t

"Data" is too vague, renaming it to psa_pake_step_t. It is still
somewhat vague, but at least consistent with the naming used in key
derivation.

Signed-off-by: Janos Follath <janos.follath@arm.com>
diff --git a/include/psa/crypto.h b/include/psa/crypto.h
index 7efa315..9ceac0a 100644
--- a/include/psa/crypto.h
+++ b/include/psa/crypto.h
@@ -4478,7 +4478,7 @@
  *         results in this error code.
  */
 psa_status_t psa_pake_output(psa_pake_operation_t *operation,
-                             psa_pake_data_t type,
+                             psa_pake_step_t type,
                              uint8_t *output,
                              size_t output_size,
                              size_t *output_length);
@@ -4518,7 +4518,7 @@
  *         results in this error code.
  */
 psa_status_t psa_pake_input(psa_pake_operation_t *operation,
-                             psa_pake_data_t type,
+                             psa_pake_step_t type,
                              uint8_t *input,
                              size_t input_length);