net: airoha: Enforce ETS Qdisc priomap

EN7581 SoC supports fixed QoS band priority where WRR queues have lowest
priorities with respect to SP ones.
E.g: WRR0, WRR1, .., WRRm, SP0, SP1, .., SPn

Enforce ETS Qdisc priomap according to the hw capabilities.

Suggested-by: Davide Caratti <dcaratti@redhat.com>
Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Reviewed-by: Davide Caratti <dcaratti@redhat.com>
Link: https://patch.msgid.link/20250112-airoha_ets_priomap-v1-1-fb616de159ba@kernel.org


Signed-off-by: Jakub Kicinski <kuba@kernel.org>