Initial commit for TF-A CI scripts

Signed-off-by: Fathi Boudra <fathi.boudra@linaro.org>
diff --git a/tf_config/README b/tf_config/README
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--- /dev/null
+++ b/tf_config/README
@@ -0,0 +1,8 @@
+#
+# Copyright (c) 2019, Arm Limited. All rights reserved.
+#
+# SPDX-License-Identifier: BSD-3-Clause
+#
+
+Files in this directory sets Trusted Firmware build options as they ought to
+appear on the build command line.