arm: gic: Use proper accessor functions

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

arch/arm/common/gic.c

@@ -382,7 +382,7 @@ void __cpuinit gic_enable_ppi(unsigned int irq)
 	unsigned long flags;
 
 	local_irq_save(flags);
-	irq_to_desc(irq)->status |= IRQ_NOPROBE;
+	irq_set_status_flags(irq, IRQ_NOPROBE);
 	gic_unmask_irq(irq_get_irq_data(irq));
 	local_irq_restore(flags);
 }