net/bnxt: fix port stop process and cleanup resources

net/bnxt: fix port stop process and cleanup resources

The port deinitialization now cleans up all the resources
properly. If all the ports are stopped then ULP context is
freed.
Added fix to update the correct tfp pointer in the ULP context
with the changes to support multi control channels.

Fixes: 70e64b27af5b ("net/bnxt: support ULP session manager cleanup")
Cc: stable@dpdk.org
Signed-off-by: Kishore Padmanabha <kishore.padmanabha@broadcom.com>
Reviewed-by: Mike Baucom <michael.baucom@broadcom.com>
Reviewed-by: Shahaji Bhosle <sbhosle@broadcom.com>