components/openssl: add license header

components/openssl/include/internal/ssl_cert.h

@@ -1,11 +1,23 @@
+// Copyright 2015-2016 Espressif Systems (Shanghai) PTE LTD
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
 #ifndef _SSL_CERT_H_
 #define _SSL_CERT_H_
 
-#include "ssl_pkey.h"
-#include "ssl_x509.h"
-
-CERT *ssl_cert_new(void);
+#include "ssl_types.h"
 
+CERT* ssl_cert_new(void);
 void ssl_cert_free(CERT *c);
 
 #endif