FVP: Update FVP model version to 11.15.14

Updated FVP model version to 11.15.14 as per latest release.
Also, renamed matterhornx4 FVP model name to cortex-a710.

Change-Id: I597a144dbba5a32aaad64b2a6cdfc7a685456286
Signed-off-by: Manish V Badarkhe <Manish.Badarkhe@arm.com>
diff --git a/model/cortex-a710.sh b/model/cortex-a710.sh
new file mode 100644
index 0000000..29d5978
--- /dev/null
+++ b/model/cortex-a710.sh
@@ -0,0 +1,10 @@
+#!/usr/bin/env bash
+#
+# Copyright (c) 2021 Arm Limited. All rights reserved.
+#
+# SPDX-License-Identifier: BSD-3-Clause
+#
+
+set_model_path "$warehouse/SysGen/Models/$model_version/$model_build/external/models/$model_flavour/FVP_Base_Cortex-A710x4"
+
+source "$ci_root/model/fvp_common.sh"