Fix define and function names to conform to Mbed TLS rules

Signed-off-by: Andrzej Kurek <andrzej.kurek@arm.com>
diff --git a/include/mbedtls/ssl_internal.h b/include/mbedtls/ssl_internal.h
index 6f1613f..97c00e2 100644
--- a/include/mbedtls/ssl_internal.h
+++ b/include/mbedtls/ssl_internal.h
@@ -1090,11 +1090,11 @@
 #endif
 
 #if defined(MBEDTLS_KEY_EXCHANGE__WITH_CERT__ENABLED) && defined(MBEDTLS_DELAYED_SERVER_CERT_VERIFICATION)
-int ssl_parse_delayed_certificate_verify( mbedtls_ssl_context *ssl,
-                                         int authmode,
-                                         mbedtls_x509_crt *chain,
-                                         void *rs_ctx );
-#endif /* MBEDTLS_KEY_EXCHANGE_WITH_CERT_ENABLED && MBEDTLS_DELAYED_SERVER_CERT_VERIFICATION */
+int mbedtls_ssl_parse_delayed_certificate_verify( mbedtls_ssl_context *ssl,
+                                                  int authmode,
+                                                  mbedtls_x509_crt *chain,
+                                                  void *rs_ctx );
+#endif /* MBEDTLS_KEY_EXCHANGE__WITH_CERT__ENABLED && MBEDTLS_DELAYED_SERVER_CERT_VERIFICATION */
 
 
 static inline int mbedtls_ssl_get_minor_ver( mbedtls_ssl_context const *ssl )