1. hba mode - Will export the iscsi MAC in ibft.
2. non hba mode - Will export the network MAC in ibft.
For #1 we want to create a session using bnx2i. For #2 we want to use
software iscsi (we can only use software iscsi since we do not know the
MAC for the offload card).
This patch fixes a bug where we would create a iscsi session using the
offload card if the netdev that is found through the ibft sysfs tree was
managed by a net driver that has a iscsi offload driver.