RDMA/bnxt_re: Use the default mode of congestion control

Instead of driver setting the congestion mode, use
the default values setup by Firmware. Enable the tos_ecn
field in FW.

Signed-off-by: Kalesh AP <kalesh-anakkur.purayil@broadcom.com>
Signed-off-by: Selvin Xavier <selvin.xavier@broadcom.com>
Link: https://patch.msgid.link/1731660464-27838-3-git-send-email-selvin.xavier@broadcom.com


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