ARM: Show FIQ in /proc/interrupts on CONFIG_FIQ

The show_fiq_list() call in arch/arm/kernel/irq.c currently depends on
CONFIG_ARCH_ACORN, but this is not the only architecture that supports
the usage of FIQ. Change to calling this if CONFIG_FIQ is set (which
is what arch/arm/kernel/fiq.c is built by).
Signed-off-by: Ben Dooks <ben@simtec.co.uk>
Signed-off-by: Ben Dooks <ben-linux@fluff.org>

arch/arm/kernel/irq.c

@@ -86,7 +86,7 @@ int show_interrupts(struct seq_file *p, void *v)
 unlock:
 		spin_unlock_irqrestore(&irq_desc[i].lock, flags);
 	} else if (i == NR_IRQS) {
-#ifdef CONFIG_ARCH_ACORN
+#ifdef CONFIG_FIQ
 		show_fiq_list(p, v);
 #endif
 #ifdef CONFIG_SMP