can: convert generic HW timestamp ioctl to ndo_hwtstamp callbacks

can: convert generic HW timestamp ioctl to ndo_hwtstamp callbacks

Can has generic implementation of ndo_eth_ioctl which implements only HW
timestamping commands. Implement generic ndo_hwtstamp callbacks and use
it in drivers instead of generic ioctl interface.

Signed-off-by: Vadim Fedorenko <vadim.fedorenko@linux.dev>
Reviewed-by: Kory Maincent <kory.maincent@bootlin.com>
Reviewed-by: Vincent Mailhol <mailhol@kernel.org>
Link: https://patch.msgid.link/20251029231620.1135640-2-vadim.fedorenko@linux.dev
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>