ilk_update_display_irq
void ilk_update_display_irq(struct drm_i915_private *dev_priv,
ilk_update_display_irq(dev_priv, bits, bits);
ilk_update_display_irq(dev_priv, bits, 0);
ilk_update_display_irq(dev_priv, hotplug_irqs, enabled_irqs);
ilk_update_display_irq(dev_priv, hotplug_irqs, enabled_irqs);