drm/i915: Make GEM object alloc/free and stolen created take dev_priv

Where it is more appropriate and also to be consistent with
the direction of the driver.

v2: Leave out object alloc/free inlining. (Joonas Lahtinen)

Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
diff --git a/drivers/gpu/drm/i915/i915_gem_dmabuf.c b/drivers/gpu/drm/i915/i915_gem_dmabuf.c
index 5e38299..d037adc 100644
--- a/drivers/gpu/drm/i915/i915_gem_dmabuf.c
+++ b/drivers/gpu/drm/i915/i915_gem_dmabuf.c
@@ -278,7 +278,7 @@ struct drm_gem_object *i915_gem_prime_import(struct drm_device *dev,
 
 	get_dma_buf(dma_buf);
 
-	obj = i915_gem_object_alloc(dev);
+	obj = i915_gem_object_alloc(to_i915(dev));
 	if (obj == NULL) {
 		ret = -ENOMEM;
 		goto fail_detach;