docs: networking: convert arcnet-hardware.txt to ReST

- add SPDX header;
- add document title markup;
- add notes markups;
- mark tables as such;
- mark code blocks and literals as such;
- adjust identation, whitespaces and blank lines;
- add to networking/index.rst.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Mauro Carvalho Chehab 2020-04-28 00:01:19 +02:00 • committed by David S. Miller
commit aa92320b3e
3 changed files with 3235 additions and 3133 deletions