drm/i915: pass dev_priv to i915_gem_cleanup_stolen

It really wants dev_priv anyway, also now matches i915_gem_init_stolen.
Signed-off-by: Matthew Auld <matthew.auld@intel.com>
Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Cc: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Link: https://patchwork.freedesktop.org/patch/msgid/20180920142707.19659-2-matthew.auld@intel.com

drivers/gpu/drm/i915/i915_drv.h

@@ -3339,7 +3339,7 @@ int i915_gem_stolen_insert_node_in_range(struct drm_i915_private *dev_priv,
 void i915_gem_stolen_remove_node(struct drm_i915_private *dev_priv,
 				 struct drm_mm_node *node);
 int i915_gem_init_stolen(struct drm_i915_private *dev_priv);
-void i915_gem_cleanup_stolen(struct drm_device *dev);
+void i915_gem_cleanup_stolen(struct drm_i915_private *dev_priv);
 struct drm_i915_gem_object *
 i915_gem_object_create_stolen(struct drm_i915_private *dev_priv,
 			      resource_size_t size);

drivers/gpu/drm/i915/i915_gem_gtt.c

@@ -3005,7 +3005,7 @@ void i915_ggtt_cleanup_hw(struct drm_i915_private *dev_priv)
 	arch_phys_wc_del(ggtt->mtrr);
 	io_mapping_fini(&ggtt->iomap);
 
-	i915_gem_cleanup_stolen(&dev_priv->drm);
+	i915_gem_cleanup_stolen(dev_priv);
 }
 
 static unsigned int gen6_get_total_gtt_size(u16 snb_gmch_ctl)

drivers/gpu/drm/i915/i915_gem_stolen.c

@@ -167,10 +167,8 @@ static int i915_adjust_stolen(struct drm_i915_private *dev_priv,
 	return 0;
 }
 
-void i915_gem_cleanup_stolen(struct drm_device *dev)
+void i915_gem_cleanup_stolen(struct drm_i915_private *dev_priv)
 {
-	struct drm_i915_private *dev_priv = to_i915(dev);
-
 	if (!drm_mm_initialized(&dev_priv->mm.stolen))
 		return;