psa: driver: Fix comment whitespace format

Fix comment formatting whitespace issues in crypto_driver.h to match our
style.
diff --git a/include/psa/crypto_driver.h b/include/psa/crypto_driver.h
index 9bf00d5..737476a 100644
--- a/include/psa/crypto_driver.h
+++ b/include/psa/crypto_driver.h
@@ -684,7 +684,7 @@
  * \param[in] iv_length         The size in bytes of the contents of `p_iv`
  *
  * \retval PSA_SUCCESS
-*/
+ */
 typedef psa_status_t (*pcd_cipher_transparent_set_iv_t)(pcd_cipher_transparent_context_t *p_context,
                                                         const uint8_t *p_iv,
                                                         size_t iv_length);
@@ -723,7 +723,7 @@
 
 /** \brief The function prototype for the finish operation of transparent-key
  * block cipher operations.
-*
+ *
  *  Functions that implement the prototype should be named in the following
  * convention:
  * ~~~~~~~~~~~~~{.c}