The "throttling" code in the in-kernel iSCSI initiator is very questionable;
it sleeps on a ccb that appears highly unlikely to wake up, since it seems
to be waiting to _submit_ that very ccb!  This is doubtless why someone tried
to disable it in the default case via several #defines.

Unfortunately one of those #defines is later tested backwards.  Fix that.
The in-kernel initiator now seems to survive a system build without hanging.
- Add some Intel gigabit Ethernet devices.
- Remove trailing white spaces.
Regen.