Added submodule contents into tree

externals/mbedtls/programs/test/query_included_headers.c

@@ -0,0 +1,29 @@
+/* Ad hoc report on included headers. */
+/*
+ *  Copyright The Mbed TLS Contributors
+ *  SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later
+ */
+
+#include <psa/crypto.h>
+#include <mbedtls/platform.h>
+
+int main(void)
+{
+
+    /* Which PSA platform header? */
+#if defined(PSA_CRYPTO_PLATFORM_H)
+    mbedtls_printf("PSA_CRYPTO_PLATFORM_H\n");
+#endif
+#if defined(PSA_CRYPTO_PLATFORM_ALT_H)
+    mbedtls_printf("PSA_CRYPTO_PLATFORM_ALT_H\n");
+#endif
+
+    /* Which PSA struct header? */
+#if defined(PSA_CRYPTO_STRUCT_H)
+    mbedtls_printf("PSA_CRYPTO_STRUCT_H\n");
+#endif
+#if defined(PSA_CRYPTO_STRUCT_ALT_H)
+    mbedtls_printf("PSA_CRYPTO_STRUCT_ALT_H\n");
+#endif
+
+}