Sync expect scripts with internal CI

Sync expect scripts with platform-ci commit:
539c151d0cd99a5e6ca6c0e6966f6d8579fe864e

Signed-off-by: Zelalem <zelalem.aweke@arm.com>
Change-Id: I4b0ed80659aaad1f3b05f8891009238f51400546
diff --git a/expect/timeout.exp b/expect/timeout.exp
new file mode 100644
index 0000000..276244c
--- /dev/null
+++ b/expect/timeout.exp
@@ -0,0 +1,18 @@
+#
+# Copyright (c) 2020, Arm Limited. All rights reserved.
+#
+# SPDX-License-Identifier: BSD-3-Clause
+#
+# Expect script for Trusted Firmware Test Framework
+#
+
+source [file join [file dirname [info script]] handle-arguments.inc]
+
+expect {
+        timeout {
+		puts "<<Timeout expected - Success>>"
+                exit_uart 0
+        }
+}
+
+exit_uart -1