drm: Remove unused drm_device from drm_gem_object_lookup()

drm_gem_object_lookup() has never required the drm_device for its file
local translation of the user handle to the GEM object. Let's remove the
unused parameter and save some space.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: dri-devel@lists.freedesktop.org
Cc: Dave Airlie <airlied@redhat.com>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
[danvet: Fixup kerneldoc too.]
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
diff --git a/drivers/gpu/drm/exynos/exynos_drm_gem.c b/drivers/gpu/drm/exynos/exynos_drm_gem.c
index 72d9414..cdf9f1a 100644
--- a/drivers/gpu/drm/exynos/exynos_drm_gem.c
+++ b/drivers/gpu/drm/exynos/exynos_drm_gem.c
@@ -177,7 +177,7 @@
 	struct exynos_drm_gem *exynos_gem;
 	struct drm_gem_object *obj;
 
-	obj = drm_gem_object_lookup(dev, file_priv, gem_handle);
+	obj = drm_gem_object_lookup(file_priv, gem_handle);
 	if (!obj) {
 		DRM_ERROR("failed to lookup gem object.\n");
 		return 0;
@@ -296,7 +296,7 @@
 	struct exynos_drm_gem *exynos_gem;
 	struct drm_gem_object *obj;
 
-	obj = drm_gem_object_lookup(dev, filp, gem_handle);
+	obj = drm_gem_object_lookup(filp, gem_handle);
 	if (!obj) {
 		DRM_ERROR("failed to lookup gem object.\n");
 		return ERR_PTR(-EINVAL);
@@ -313,7 +313,7 @@
 {
 	struct drm_gem_object *obj;
 
-	obj = drm_gem_object_lookup(dev, filp, gem_handle);
+	obj = drm_gem_object_lookup(filp, gem_handle);
 	if (!obj) {
 		DRM_ERROR("failed to lookup gem object.\n");
 		return;
@@ -362,7 +362,7 @@
 	struct drm_exynos_gem_info *args = data;
 	struct drm_gem_object *obj;
 
-	obj = drm_gem_object_lookup(dev, file_priv, args->handle);
+	obj = drm_gem_object_lookup(file_priv, args->handle);
 	if (!obj) {
 		DRM_ERROR("failed to lookup gem object.\n");
 		return -EINVAL;
@@ -434,7 +434,7 @@
 	 *	with DRM_IOCTL_MODE_MAP_DUMB command.
 	 */
 
-	obj = drm_gem_object_lookup(dev, file_priv, handle);
+	obj = drm_gem_object_lookup(file_priv, handle);
 	if (!obj) {
 		DRM_ERROR("failed to lookup gem object.\n");
 		return -EINVAL;