genirq: revert dynarray

Revert the dynarray changes. They need more thought and polishing.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
diff --git a/arch/x86/xen/spinlock.c b/arch/x86/xen/spinlock.c
index bb6bc72..5601506 100644
--- a/arch/x86/xen/spinlock.c
+++ b/arch/x86/xen/spinlock.c
@@ -241,7 +241,7 @@
 		ADD_STATS(taken_slow_spurious, !xen_test_irq_pending(irq));
 	} while (!xen_test_irq_pending(irq)); /* check for spurious wakeups */
 
-	kstat_irqs_this_cpu(irq_to_desc(irq))++;
+	kstat_incr_irqs_this_cpu(irq, irq_to_desc(irq));
 
 out:
 	raw_local_irq_restore(flags);