refactor(mbedtls): avoid including MBEDTLS_CONFIG_FILE

Currently we include MBEDTLS_CONFIG_FILE directly and if a custom
config file is used it will included.

However from mbedtls-3.x onwards it discourages usage of
MBEDTLS_CONFIG_FILE include directly, so to resolve this and keep 2.28
compatibility include version.h which would include the custom config
file if present and also would expose us with mbedtls-major-version
number which could be used for selecting features and functions for
mbedtls 2.28 or 3.3

Change-Id: I029992311be2a38b588ebbb350875b03ea29acdb
Signed-off-by: Govindraj Raja <govindraj.raja@arm.com>
diff --git a/drivers/auth/tbbr/tbbr_cot_bl1_r64.c b/drivers/auth/tbbr/tbbr_cot_bl1_r64.c
index 78e38f6..236823a 100644
--- a/drivers/auth/tbbr/tbbr_cot_bl1_r64.c
+++ b/drivers/auth/tbbr/tbbr_cot_bl1_r64.c
@@ -1,13 +1,14 @@
 /*
- * Copyright (c) 2021-2022, Arm Limited and Contributors. All rights reserved.
+ * Copyright (c) 2021-2023, Arm Limited and Contributors. All rights reserved.
  *
  * SPDX-License-Identifier: BSD-3-Clause
  */
 
 #include <stddef.h>
 
+#include <mbedtls/version.h>
+
 #include <drivers/auth/auth_mod.h>
-#include MBEDTLS_CONFIG_FILE
 #include <drivers/auth/tbbr_cot_common.h>
 
 #if USE_TBBR_DEFS
@@ -15,8 +16,8 @@
 #else
 #include <platform_oid.h>
 #endif
-#include <platform_def.h>
 
+#include <platform_def.h>
 
 static unsigned char trusted_world_pk_buf[PK_DER_LEN];
 static unsigned char non_trusted_world_pk_buf[PK_DER_LEN];