drm/arc: Set GEM CMA functions with DRM_GEM_CMA_DRIVER_OPS

DRM_GEM_CMA_DRIVER_OPS sets the functions in struct drm_driver
to their defaults. No functional changes are made.
Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: Emil Velikov <emil.velikov@collabora.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200605073247.4057-6-tzimmermann@suse.de

drivers/gpu/drm/arc/arcpgu_drv.c

@@ -154,12 +154,7 @@ static struct drm_driver arcpgu_drm_driver = {
 	.minor = 0,
 	.patchlevel = 0,
 	.fops = &arcpgu_drm_ops,
-	.gem_create_object = drm_gem_cma_create_object_default_funcs,
-	.dumb_create = drm_gem_cma_dumb_create,
-	.prime_handle_to_fd = drm_gem_prime_handle_to_fd,
-	.prime_fd_to_handle = drm_gem_prime_fd_to_handle,
-	.gem_prime_import_sg_table = drm_gem_cma_prime_import_sg_table,
-	.gem_prime_mmap = drm_gem_cma_prime_mmap,
+	DRM_GEM_CMA_DRIVER_OPS,
 #ifdef CONFIG_DEBUG_FS
 	.debugfs_init = arcpgu_debugfs_init,
 #endif