Documentation: devlink: add devlink documentation for the kvaser_pciefd driver

List the version information reported by the kvaser_pciefd driver
through devlink.

Suggested-by: Vincent Mailhol <mailhol.vincent@wanadoo.fr>
Reviewed-by: Vincent Mailhol <mailhol.vincent@wanadoo.fr>
Signed-off-by: Jimmy Assarsson <extja@kvaser.com>
Link: https://patch.msgid.link/20250725123230.8-11-extja@kvaser.com


Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>