Documentation: networking: document ISO 15765-2

Document basic concepts, APIs and behaviour of the ISO 15675-2 (ISO-TP)
CAN stack.
Signed-off-by: Francesco Valla <valla.francesco@gmail.com>
Reviewed-by: Bagas Sanjaya <bagasdotme@gmail.com>
Reviewed-by: Vincent Mailhol <mailhol.vincent@wanadoo.fr>
Link: https://lore.kernel.org/all/20240501092413.414700-2-valla.francesco@gmail.comSigned-off-by: Marc Kleine-Budde <mkl@pengutronix.de>

Documentation/networking/index.rst

@@ -19,6 +19,7 @@ Contents:
    caif/index
    ethtool-netlink
    ieee802154
+   iso15765-2
    j1939
    kapi
    msg_zerocopy

MAINTAINERS

@@ -4842,6 +4842,7 @@ W:	https://github.com/linux-can
 T:	git git://git.kernel.org/pub/scm/linux/kernel/git/mkl/linux-can.git
 T:	git git://git.kernel.org/pub/scm/linux/kernel/git/mkl/linux-can-next.git
 F:	Documentation/networking/can.rst
+F:	Documentation/networking/iso15765-2.rst
 F:	include/linux/can/can-ml.h
 F:	include/linux/can/core.h
 F:	include/linux/can/skb.h