docs: networking: convert ax25.txt to ReST

There isn't much to be done here. Just:

- add SPDX header;
- add a document title.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 16 insertions, 0 deletions

diff --git a/Documentation/networking/ax25.rst b/Documentation/networking/ax25.rst
new file mode 100644
index 000000000000..824afd7002db
--- /dev/null
+++ b/Documentation/networking/ax25.rst
@@ -0,0 +1,16 @@
+.. SPDX-License-Identifier: GPL-2.0
+
+=====
+AX.25
+=====
+
+To use the amateur radio protocols within Linux you will need to get a
+suitable copy of the AX.25 Utilities. More detailed information about
+AX.25, NET/ROM and ROSE, associated programs and and utilities can be
+found on http://www.linux-ax25.org.
+
+There is an active mailing list for discussing Linux amateur radio matters
+called linux-hams@vger.kernel.org. To subscribe to it, send a message to
+majordomo@vger.kernel.org with the words "subscribe linux-hams" in the body
+of the message, the subject field is ignored.  You don't need to be
+subscribed to post but of course that means you might miss an answer.