genirq: Move INPROGRESS, MASKED and DISABLED state flags to irq_data

We really need these flags for some of the interrupt chips. Move it
from internal state to irq_data and provide proper accessors.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: David Daney <ddaney@caviumnetworks.com>

kernel/irq/handle.c

@@ -178,13 +178,13 @@ irqreturn_t handle_irq_event(struct irq_desc *desc)
 	irq_compat_clr_pending(desc);
 	desc->istate &= ~IRQS_PENDING;
 	irq_compat_set_progress(desc);
-	desc->istate |= IRQS_INPROGRESS;
+	irqd_set(&desc->irq_data, IRQD_IRQ_INPROGRESS);
 	raw_spin_unlock(&desc->lock);
 
 	ret = handle_irq_event_percpu(desc, action);
 
 	raw_spin_lock(&desc->lock);
-	desc->istate &= ~IRQS_INPROGRESS;
+	irqd_clear(&desc->irq_data, IRQD_IRQ_INPROGRESS);
 	irq_compat_clr_progress(desc);
 	return ret;
 }