Sync model scripts with internal CI

Sync model scripts with open-ci patch:
539c151d0cd99a5e6ca6c0e6966f6d8579fe864e

Signed-off-by: Zelalem <zelalem.aweke@arm.com>
Change-Id: I0d28301c86b8efd633a5ff31e548e2bfb81507a7
diff --git a/model/zeus.sh b/model/zeus.sh
new file mode 100644
index 0000000..2cb8b12
--- /dev/null
+++ b/model/zeus.sh
@@ -0,0 +1,13 @@
+#!/bin/bash
+#
+# Copyright (c) 2019, Arm Limited. All rights reserved.
+#
+# SPDX-License-Identifier: BSD-3-Clause
+#
+
+set_model_path "$warehouse/SysGen/Models/$model_version/$model_build/models/$model_flavour/FVP_Base_Zeusx4"
+
+# Option not supported on Zeus FVP yet.
+export no_quantum=""
+
+source "$ci_root/model/fvp_common.sh"