ARM: Use atomic_spin_lock/atomic_spin_unlock for irqdesc lock

This was missed in commit fd2bde5d (genirq: Convert irqdesc lock to
atomic_spinlock)
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
LKML-Reference: <1249678516-8639-1-git-send-email-u.kleine-koenig@pengutronix.de>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

arch/arm/include/asm/mach/irq.h

@@ -26,9 +26,9 @@ extern int show_fiq_list(struct seq_file *, void *);
  */
 #define do_bad_IRQ(irq,desc)				\
 do {							\
-	spin_lock(&desc->lock);				\
+	atomic_spin_lock(&desc->lock);			\
 	handle_bad_irq(irq, desc);			\
-	spin_unlock(&desc->lock);			\
+	atomic_spin_unlock(&desc->lock);		\
 } while(0)
 
 #endif