RDMA/bnxt_re: Recover the device when FW error is detected

If the FW crashes, L2 driver gets notified and it notifies
the RoCE driver. Currently driver doesn't re-initialize the
device. Add support for re-initialize the RoCE device.

RoCE device is removed and re-attached in the ulp_stop and
ulp_start respectively. The recovery logic expects the RoCE
driver to be registered with L2 driver while its being removed.
So the driver avoids unregistering with L2 driver in the
recovery path.

Signed-off-by: Chandramohan Akula <chandramohan.akula@broadcom.com>
Signed-off-by: Kalesh AP <kalesh-anakkur.purayil@broadcom.com>
Signed-off-by: Selvin Xavier <selvin.xavier@broadcom.com>
Link: https://patch.msgid.link/1726027710-2292-5-git-send-email-selvin.xavier@broadcom.com


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