drm/etnaviv: Remove etnaviv_debugfs_cleanup()

drm_debugfs_cleanup() now removes all minor->debugfs_list entries
automatically, so the drm_driver.debugfs_cleanup callback is not
needed.

Cc: l.stach@pengutronix.de
Cc: linux+etnaviv@armlinux.org.uk
Cc: christian.gmeiner@gmail.com
Signed-off-by: Noralf Trønnes <noralf@tronnes.org>
Reviewed-by: Lucas Stach <l.stach@pengutronix.de>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/20170126225621.12314-8-noralf@tronnes.org

drivers/gpu/drm/etnaviv/etnaviv_drv.c

@@ -258,12 +258,6 @@ static int etnaviv_debugfs_init(struct drm_minor *minor)
 
 	return ret;
 }
-
-static void etnaviv_debugfs_cleanup(struct drm_minor *minor)
-{
-	drm_debugfs_remove_files(etnaviv_debugfs_list,
-			ARRAY_SIZE(etnaviv_debugfs_list), minor);
-}
 #endif
 
 /*
@@ -509,7 +503,6 @@ static struct drm_driver etnaviv_drm_driver = {
 	.gem_prime_mmap     = etnaviv_gem_prime_mmap,
 #ifdef CONFIG_DEBUG_FS
 	.debugfs_init       = etnaviv_debugfs_init,
-	.debugfs_cleanup    = etnaviv_debugfs_cleanup,
 #endif
 	.ioctls             = etnaviv_ioctls,
 	.num_ioctls         = DRM_ETNAVIV_NUM_IOCTLS,