RDMA/mana_ib: add support of multiple ports

If the HW indicates support of multiple ports for rdma, create an IB device
with a port per netdev in the ethernet mana driver.

CM is only available on port 1, but RC QPs are supported on all
ports.

Signed-off-by: Konstantin Taranov <kotaranov@microsoft.com>
Link: https://patch.msgid.link/1753174515-23634-1-git-send-email-kotaranov@linux.microsoft.com


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