cert_tool: Update cert_tool for fw_config image support

Updated cert_tool to add hash information of fw_config image into
the existing "trusted boot fw" certificate.

Signed-off-by: Manish V Badarkhe <Manish.Badarkhe@arm.com>
Change-Id: I720319225925806a2a9f50a1ac9c8a464be975f0
diff --git a/tools/cert_create/src/tbbr/tbb_cert.c b/tools/cert_create/src/tbbr/tbb_cert.c
index b614e2e..f4fe63d 100644
--- a/tools/cert_create/src/tbbr/tbb_cert.c
+++ b/tools/cert_create/src/tbbr/tbb_cert.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2015-2018, ARM Limited and Contributors. All rights reserved.
+ * Copyright (c) 2015-2020, ARM Limited and Contributors. All rights reserved.
  *
  * SPDX-License-Identifier: BSD-3-Clause
  */
@@ -28,9 +28,10 @@
 			TRUSTED_FW_NVCOUNTER_EXT,
 			TRUSTED_BOOT_FW_HASH_EXT,
 			TRUSTED_BOOT_FW_CONFIG_HASH_EXT,
-			HW_CONFIG_HASH_EXT
+			HW_CONFIG_HASH_EXT,
+			FW_CONFIG_HASH_EXT
 		},
-		.num_ext = 4
+		.num_ext = 5
 	},
 	[TRUSTED_KEY_CERT] = {
 		.id = TRUSTED_KEY_CERT,