Revert "staging: octeon: delete driver"

This reverts commit 710d7fbe21ee2ceab121f1f84a20edf68f9f9742.
Re-instate the code so subsequent commits can clean it up and get it
building properly.

Signed-off-by: Chris Packham <chris.packham@alliedtelesis.co.nz>
Link: https://lore.kernel.org/r/20200205001116.14096-3-chris.packham@alliedtelesis.co.nz
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging: octeon: delete driver

This driver has been in the tree since 2009 with no real movement to get
it out. Now it is starting to cause build issues and other problems for
people who want to fix coding style problems, but can not actually build
it.

As nothing is happening here, just delete the module entirely.

Reported-by: Guenter Roeck <linux@roeck-us.net>
Acked-by: Guenter Roeck <linux@roeck-us.net>
Cc: David Daney <ddaney@caviumnetworks.com>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: "Matthew Wilcox (Oracle)" <willy@infradead.org>
Cc: Guenter Roeck <linux@roeck-us.net>
Cc: YueHaibing <yuehaibing@huawei.com>
Cc: Aaro Koskinen <aaro.koskinen@iki.fi>
Cc: Wambui Karuga <wambui.karugax@gmail.com>
Cc: Julia Lawall <julia.lawall@lip6.fr>
Cc: Florian Westphal <fw@strlen.de>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Branden Bonaby <brandonbonaby94@gmail.com>
Cc: "Petr Štetiar" <ynezz@true.cz>
Cc: Sandro Volery <sandro@volery.com>
Cc: Paul Burton <paulburton@kernel.org>
Cc: Dan Carpenter <dan.carpenter@oracle.com>
Cc: Giovanni Gherdovich <bobdc9664@seznam.cz>
Cc: Valery Ivanov <ivalery111@gmail.com>
Link: https://lore.kernel.org/r/20191210091509.3546251-1-gregkh@linuxfoundation.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging: octeon: remove redundant license text

Now that the SPDX tag is in all drivers/staging/octeon/ files, that
identifies the license in a specific and legally-defined manner. So the
extra GPL text wording can be removed as it is no longer needed at all.

This is done on a quest to remove the 700+ different ways that files in
the kernel describe the GPL license text. And there's unneeded stuff
like the address (sometimes incorrect) for the FSF which is never
needed.

No copyright headers or other non-license-description text was removed.

Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging: octeon: add SPDX identifiers.

It's good to have SPDX identifiers in all files to make it easier to
audit the kernel tree for correct licenses.

Fix up the staging octeon driver to have a proper SPDX identifier, based
on the license text in the file itself. The SPDX identifier is a
legally binding shorthand, which can be used instead of the full boiler
plate text.

This work is based on a script and data from Thomas Gleixner, Philippe
Ombredanne, and Kate Stewart.

Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Kate Stewart <kstewart@linuxfoundation.org>
Cc: Philippe Ombredanne <pombredanne@nexb.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging: octeon-ethernet: update boilerplate comments

Update boilerplate comments to be more terse by removing
redundant information.

Signed-off-by: Aaro Koskinen <aaro.koskinen@iki.fi>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Staging: Add octeon-ethernet driver files.

The octeon-ethernet driver supports the sgmii, rgmii, spi, and xaui
ports present on the Cavium OCTEON family of SOCs. These SOCs are
multi-core mips64 processors with existing support over in arch/mips.

The driver files can be categorized into three basic groups:

1) Register definitions, these are named cvmx-*-defs.h

2) Main driver code, these have names that don't start cvmx-.

3) Interface specific functions and other utility code, names starting
with cvmx-

Signed-off-by: David Daney <ddaney@caviumnetworks.com>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>