SPDX: Convert a few files that were missed before

As part of the main conversion a few files were missed. These files had
additional whitespace after the '*' and before the SPDX tag and my
previous regex was too strict. This time I did a grep for all SPDX tags
and then filtered out anything that matched the correct styles.

Fixes: 83d290c56fab ("SPDX: Convert all of our single license tags to Linux Kernel style")
Reported-by: Heinrich Schuchardt <xypron.debian@gmx.de>
Signed-off-by: Tom Rini <trini@konsulko.com>

net: cosmetic: Clean up CDP variables and functions

Make a thorough pass through all variables and function names contained
within cdp.c and remove CamelCase and improve naming.

Signed-off-by: Joe Hershberger <joe.hershberger@ni.com>
Acked-by: Simon Glass <sjg@chromium.org>

SPDX License cleanup for LiMon imported files

A number of network related files were imported from the LiMon
project; these contain a somewhat unclear license statement:

Copyright 1994 - 2000 Neil Russell.
(See License)

I analyzed the source code of LiMon v1.4.2 which was used for this
import. It does not contain any "License" file, but the top level
directory contains a file "COPYING", which turns out to be GPL v2
of June 1991. So it is legitimate to conclude that the LiMon derived
files are also to be released under GPLv2. Mark them as such.

Signed-off-by: Wolfgang Denk <wd@denx.de>

net: cosmetic: Rename CDPHandler to cdp_receive

This is not called as a handler, so don't name it that way

Signed-off-by: Joe Hershberger <joe.hershberger@ni.com>

net: Move CDP out of net.c

Separate this functionality out of the net.c behemoth

Signed-off-by: Joe Hershberger <joe.hershberger@ni.com>