drivers: can: solely use sjw from devicetree for initial timing

Update the CAN controller drivers to solely use the sjw and sjw-data
devicetree properties for setting the initial timing when devicetree timing
parameters are specified in Time Quanta (TQ).

Any timing set via the CAN timing APIs will contain either user-provided or
automatically calculated SJW values. This includes any timing parameters
calculated from bus-speed and bus-speed-data devicetree properties.

Update the CAN controller driver tests accordingly and remove the
CAN_SJW_NO_CHANGE definition as it has lost its meaning.

Fixes: #63033

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