allocate_io_interrupt_vectors
status_t allocate_io_interrupt_vectors(int32 count, int32 *startVector,
result = allocate_io_interrupt_vectors(32, &fMsiStartIrq, INTERRUPT_TYPE_IRQ);
status_t allocate_io_interrupt_vectors(long count, long *startVector);
status_t result = allocate_io_interrupt_vectors(count, &vector,