Add ssl_msg code and remove net config to pass build

Signed-off-by: Jun Nie <jun.nie@linaro.org>
diff --git a/lib/libmbedtls/include/mbedtls_config_uta.h b/lib/libmbedtls/include/mbedtls_config_uta.h
index f9db55b..1054a49 100644
--- a/lib/libmbedtls/include/mbedtls_config_uta.h
+++ b/lib/libmbedtls/include/mbedtls_config_uta.h
@@ -73,7 +73,6 @@
 
 #define MBEDTLS_SSL_TLS_C
 #define MBEDTLS_SSL_CLI_C
-#define MBEDTLS_NET_C
 #define MBEDTLS_SSL_PROTO_SSL3
 #define MBEDTLS_SSL_PROTO_TLS1
 #define MBEDTLS_SSL_PROTO_TLS1_1
diff --git a/lib/libmbedtls/sub.mk b/lib/libmbedtls/sub.mk
index 1a752bf..98a465e 100644
--- a/lib/libmbedtls/sub.mk
+++ b/lib/libmbedtls/sub.mk
@@ -116,6 +116,7 @@
 SRCS_TLS += ssl_ciphersuites.c
 SRCS_TLS += ssl_cli.c
 SRCS_TLS += ssl_cookie.c
+SRCS_TLS += ssl_msg.c
 SRCS_TLS += ssl_srv.c
 SRCS_TLS += ssl_ticket.c
 SRCS_TLS += ssl_tls.c