can: m_can: remove support for custom bit timing, take #2

can: m_can: remove support for custom bit timing, take #2

Now when Intel Elkhart Lake uses again common bit timing and there are
no other users for custom bit timing, we can bring back the changes
done by the commit 8c85ab3d4252 ("can: m_can: remove support for
custom bit timing").

This effectively reverts commit 1c5ca465c416 ("Revert "can: m_can:
remove support for custom bit timing"") while taking into account
commit daa278e1a9db ("can: m_can: make custom bittiming fields const")
and commit 6f73d596545d ("can: dev: add sanity check in
can_set_static_ctrlmode()").

Link: https://lore.kernel.org/all/20220512124144.536850-2-jarkko.nikula@linux.intel.com
Signed-off-by: Jarkko Nikula <jarkko.nikula@linux.intel.com>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>