Used sphinx-quickstart to generate top level config and
Makefile.sphinx, to allow side by side DocBook and Sphinx
co-existence.
(From yocto-docs rev: 01dd5af7954e24552aca022917669b27bb0541ed)
Signed-off-by: Nicolas Dechesne <nicolas.dechesne@linaro.org>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>