drm/i915: Make IS_HASWELL only take dev_priv

Saves 2432 bytes of .rodata strings.

v2: Add parantheses around dev_priv. (Ville Syrjala)

Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Reviewed-by: David Weinehall <david.weinehall@linux.intel.com>
Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Acked-by: Jani Nikula <jani.nikula@linux.intel.com>
Acked-by: Chris Wilson <chris@chris-wilson.co.uk>
Acked-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
diff --git a/drivers/gpu/drm/i915/i915_irq.c b/drivers/gpu/drm/i915/i915_irq.c
index c2a960e..4eae1be 100644
--- a/drivers/gpu/drm/i915/i915_irq.c
+++ b/drivers/gpu/drm/i915/i915_irq.c
@@ -3591,8 +3591,8 @@
 	dev_priv->gt_irq_mask = ~0;
 	if (HAS_L3_DPF(dev)) {
 		/* L3 parity interrupt is always unmasked. */
-		dev_priv->gt_irq_mask = ~GT_PARITY_ERROR(dev);
-		gt_irqs |= GT_PARITY_ERROR(dev);
+		dev_priv->gt_irq_mask = ~GT_PARITY_ERROR(dev_priv);
+		gt_irqs |= GT_PARITY_ERROR(dev_priv);
 	}
 
 	gt_irqs |= GT_RENDER_USER_INTERRUPT;