RDMA/bnxt_re: Support different traffic class

Adding support for different traffic class passed
to driver. Fix the traffic class setting in modify_qp
by skipping the ECN bits. Pass the service level received
from applications to the firmware.

Signed-off-by: Chandramohan Akula <chandramohan.akula@broadcom.com>
Reviewed-by: Kalesh AP <kalesh-anakkur.purayil@broadcom.com>
Signed-off-by: Selvin Xavier <selvin.xavier@broadcom.com>
Link: https://patch.msgid.link/1731660464-27838-2-git-send-email-selvin.xavier@broadcom.com


Signed-off-by: Leon Romanovsky <leon@kernel.org>