The last firmware change for the in-kernel firmware source code was back
in 2013.  Everyone has been relying on the out-of-tree linux-firmware
package for a long long time.

So let's drop it, it's baggage we don't need to keep dragging around
(and having to fix random kbuild issues over time...)

Cc: Kyle McMartin <kyle@kernel.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Michal Marek <mmarek@suse.com>
Cc: Masahiro Yamada <yamada.masahiro@socionext.com>
Acked-by: David Woodhouse <dwmw2@infradead.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Kyle McMartin joined the linux-firmware maintainers, and we now
have an alias <linux-firmware@kernel.org> which reaches all of us.
Include that instead of the individual addresses.

Add some further recommendations that were already included in the
README in linux-firmware.git added by Xose Vazquez Perez
<xose.vazquez@gmail.com>.

Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>

David and I are sharing maintenance of this repository.  Patches
should be sent to both of us.

Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>