Add documentation skeleton.

Add licensing information and minimal documentation.

Change-Id: I5dea9192634980eda0e3518b1bff7cea85a9ab91
Signed-off-by: Gyorgy Szing <gyorgy.szing@arm.com>
diff --git a/docs/Makefile b/docs/Makefile
new file mode 100644
index 0000000..7eb44e1
--- /dev/null
+++ b/docs/Makefile
@@ -0,0 +1,22 @@
+#!/usr/bin/env make
+#
+# Copyright (c) 2020, Arm Limited and contributors. All rights reserved.
+#
+# SPDX-License-Identifier: BSD-3-Clause
+#
+
+.SUFFIXES:
+
+.PHNOY: all
+
+RM:=cmake -E rm -rf
+
+all:
+	sphinx-build -b html . _build
+
+serve:
+	sphinx-autobuild . _build
+
+.PHONY:clean
+clean:
+	${RM} _build