John Baldwin ec9a9cf1e0 Attach interrupt handlers during attach instead of during the first time
the interface is brought up.  Without this, the boot time interrupt
round-robin assignment does not think the allocated interrupt resources
are active and leaves them assigned to CPU 0.

While here, add descriptive tags to each interrupt handler when MSI-X
is used.

Reviewed by:	np
MFC after:	1 week
2012-08-30 17:47:39 +00:00
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