linux-phytec-ti

docs: parisc: convert to ReST and add to documentation body

Manually convert the two PA-RISC documents to ReST, adding them
to the Linux documentation body.

Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>