IRQ #0 broken on ARM

Dmitry Eremin-Solenikov [off-list ref] writes:

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Perhaps use NR_IRQS_LEGACY here.

Ah yes, good idea.

What about using NUM_ISA_INTERRUPTS? This would be logical
if viper & zeus were converted to call irq_domain_add_legacy_isa.

That would make include/mach/irqs.h depend on include/linux/irqdomain.h.

That's something that makes me fell uneasy, as this irqs.h could be very well
used in assembler files, and I must check it.

On the other hand, NR_IRQS_LEGACY is defined in include/asm/irq.h, and that one
looks a better candidate for inclusion in mach/irqs.h.

Cheers.

-- 
Robert