net: mana: Probe rdma device in mana driver

Initialize gdma device for rdma inside mana module.
For each gdma device, initialize an auxiliary ib device.

Signed-off-by: Konstantin Taranov <kotaranov@microsoft.com>
Link: https://patch.msgid.link/1746633545-17653-2-git-send-email-kotaranov@linux.microsoft.com


Reviewed-by: Long Li <longli@microsoft.com>
Signed-off-by: Leon Romanovsky <leon@kernel.org>