can: kvaser_pciefd: Add devlink support

Add devlink support at device level.

Example output:
  $ devlink dev
  pci/0000:07:00.0
  pci/0000:08:00.0
  pci/0000:09:00.0

  $ devlink dev info
  pci/0000:07:00.0:
    driver kvaser_pciefd
  pci/0000:08:00.0:
    driver kvaser_pciefd
  pci/0000:09:00.0:
    driver kvaser_pciefd

Reviewed-by: Vincent Mailhol <mailhol.vincent@wanadoo.fr>
Signed-off-by: Jimmy Assarsson <extja@kvaser.com>
Link: https://patch.msgid.link/20250725123230.8-8-extja@kvaser.com


[mkl: kvaser_pciefd_remove(): fix use-after-free]
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>