canbus: isotp: avoid reusing CAN controller driver API definitions

Avoid reusing the CAN_EXTENDED_IDENTIFIER and CAN_STANDARD_IDENTIFIER
definitions from the CAN controller driver API for ISO-TP structure members
as this is a fragile design.

The ISO-TP layer must be responsible for its own definitions where
needed. Replace the "id_type" ISO-TP struct member with a well-known
abbreviated "ide" bit (Identifier Extension Bit) struct member.

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