Fixes X509 sample app and SSL test suite
Fixes the X.509 cert_app and the SSL test suite for the non-default
configs which don't build with if MBEDTLS_PLATFORM_C isn't defined.
diff --git a/programs/x509/cert_app.c b/programs/x509/cert_app.c
index 84f67e6..3f50a7a 100644
--- a/programs/x509/cert_app.c
+++ b/programs/x509/cert_app.c
@@ -29,6 +29,9 @@
#include "mbedtls/platform.h"
#else
#include <stdio.h>
+#include <stdlib.h>
+#define mbedtls_time time
+#define mbedtls_time_t time_t
#define mbedtls_fprintf fprintf
#define mbedtls_printf printf
#endif