New source file for configuration checks

This will be populated in subsequent commits.

Signed-off-by: Gilles Peskine <Gilles.Peskine@arm.com>

library/mbedtls_config.c

@@ -0,0 +1,9 @@
+/*
+ *  Mbed TLS configuration checks
+ */
+/*
+ *  Copyright The Mbed TLS Contributors
+ *  SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later
+ */
+
+#include <mbedtls/build_info.h>