Fixed possible deadlock from recursive INTs on same cpu.  Since we use lazy masking INTREN()/INTRDIS() might be called with INTs enabled. This means another higher prio INT to the same cpu could attempt to re-enter the critical region, but would spin waiting for the lock.  Since it is the owner, it would deadlock.
Fixed possible deadlock from recursive INTs on same cpu.  Since
we use lazy masking INTREN()/INTRDIS() might be called with INTs enabled.
This means another higher prio INT to the same cpu could attempt to
re-enter the critical region, but would spin waiting for the lock.  Since
it is the owner, it would deadlock.

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