[SSL] add openssl

Change-Id: I22299fc186351dfedabd9e47c90b0283ca6bb29d
diff --git a/mbtk/mbtk_lib/inc/mbtk_sock_internal.h b/mbtk/mbtk_lib/inc/mbtk_sock_internal.h
index 4ee7125..de822bc 100755
--- a/mbtk/mbtk_lib/inc/mbtk_sock_internal.h
+++ b/mbtk/mbtk_lib/inc/mbtk_sock_internal.h
@@ -17,6 +17,9 @@
     x509_crt *cacert;
     x509_crt *clicert;
     pk_context* pkey;
+#else
+    SSL_CTX *ctx;
+    SSL *ssl;
 #endif
 } mbtk_sock_inter_info_s;
 
@@ -58,4 +61,4 @@
     const char *alpn_string;    /* ALPN supported protocols                 */
 } opt;
 
-#endif /* MBTK_SOCK_INTERNAL_INCLUDE */
\ No newline at end of file
+#endif /* MBTK_SOCK_INTERNAL_INCLUDE */