drivers: can: sam0: use bosch m_can timing parameter initializers

The minimum/maximum CAN timing parameters for the Atmel SAM0 CAN driver
uses the wrong values for the minimum, nominal phase segment values. The
same goes for the maximum, nominal SJW value.

Using the static initializers fixes these and aligns them to the Bosch
M_CAN manual. The Atmel SAM C20/C21 family data sheet contains
contradicting limits for these register values.

Fixes: #58429

Signed-off-by: Henrik Brix Andersen <hebad@vestas.com>