fix various issues

Signed-off-by: Jerry Yu <jerry.h.yu@arm.com>
diff --git a/include/mbedtls/pk.h b/include/mbedtls/pk.h
index fbc1794..4ac4e28 100644
--- a/include/mbedtls/pk.h
+++ b/include/mbedtls/pk.h
@@ -537,7 +537,7 @@
 
 #if defined(MBEDTLS_PSA_CRYPTO_C)
 /**
- * \brief           Make signature with input pk type. not the type of \p ctx .
+ * \brief           Make signature given a signature type.
  *
  * \param pk_type   Signature type.
  * \param ctx       The PK context to use. It must have been set up
diff --git a/include/mbedtls/psa_util.h b/include/mbedtls/psa_util.h
index 1aa365f..8dd47f6 100644
--- a/include/mbedtls/psa_util.h
+++ b/include/mbedtls/psa_util.h
@@ -277,13 +277,11 @@
 }
 #endif /* MBEDTLS_ECP_C */
 
-#endif /* MBEDTLS_PSA_CRYPTO_C */
-
 /* Expose whatever RNG the PSA subsystem uses to applications using the
  * mbedtls_xxx API. The declarations and definitions here need to be
  * consistent with the implementation in library/psa_crypto_random_impl.h.
  * See that file for implementation documentation. */
-#if defined(MBEDTLS_PSA_CRYPTO_C)
+
 
 /* The type of a `f_rng` random generator function that many library functions
  * take.
@@ -363,6 +361,6 @@
 
 #endif /* !defined(MBEDTLS_PSA_CRYPTO_EXTERNAL_RNG) */
 
-#endif /* defined(MBEDTLS_USE_PSA_CRYPTO) || defined(MBEDTLS_SSL_PROTO_TLS1_3) */
+#endif /* MBEDTLS_PSA_CRYPTO_C */
 
 #endif /* MBEDTLS_PSA_UTIL_H */