Manually convert the two openRisc documents to ReST, adding them
to the Linux documentation body.
Signed-off-by: NMauro Carvalho Chehab <mchehab+samsung@kernel.org>
Acked-by: NStafford Horne <shorne@gmail.com>
Signed-off-by: NJonathan Corbet <corbet@lwn.net>