Update dependencies & includes for session tickets
diff --git a/include/mbedtls/config.h b/include/mbedtls/config.h
index 0d3bacf..aef4dfb 100644
--- a/include/mbedtls/config.h
+++ b/include/mbedtls/config.h
@@ -1109,10 +1109,11 @@
  * \def MBEDTLS_SSL_SESSION_TICKETS
  *
  * Enable support for RFC 5077 session tickets in SSL.
- *
- * Requires: MBEDTLS_AES_C
- *           MBEDTLS_SHA256_C
- *           MBEDTLS_CIPHER_MODE_CBC
+ * Client-side, provides full support for session tickets (maintainance of a
+ * session store remains the responsibility of the application, though).
+ * Server-side, you also need to provide callbacks for writing and parsing
+ * tickets, including authenticated encryption and key management. Example
+ * callbacks are provided by MBEDTLS_SSL_TICKET_C.
  *
  * Comment this macro to disable support for SSL session tickets
  */
@@ -2096,6 +2097,10 @@
  *
  * Module:  library/ssl_ticket.c
  * Caller:
+ *
+ * Requires: MBEDTLS_AES_C
+ *           MBEDTLS_SHA256_C
+ *           MBEDTLS_CIPHER_MODE_CBC
  */
 #define MBEDTLS_SSL_TICKET_C