Change DSA API to use `net_if` directly to make API calls instead of
indirectly via `dsa_context` and `switch_id`.
Remove unused `switch_id`, `switch_enable_port`, and `dsa_get_context`.
Signed-off-by: Arvin Farahmand <arvinf@ip-logix.com>
Replace all existing deprecated API with the recommended alternative.
Signed-off-by: Peter Bigot <peter.bigot@nordicsemi.no>
Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>