Reverting a change introduced in 6de7e7f8b3698 "[drm] upstream sync to v4.10"
(upstream c470abd4fde40ea).

Index: src/drivers/gpu/drm/mgag200/mgag200_ttm.c
===================================================================
--- src.orig/drivers/gpu/drm/mgag200/mgag200_ttm.c	2017-06-20 20:40:47.431726640 +0200
+++ src/drivers/gpu/drm/mgag200/mgag200_ttm.c	2017-06-20 20:40:53.018643824 +0200
@@ -240,14 +240,11 @@
 	.ttm_tt_populate = mgag200_ttm_tt_populate,
 	.ttm_tt_unpopulate = mgag200_ttm_tt_unpopulate,
 	.init_mem_type = mgag200_bo_init_mem_type,
-	.eviction_valuable = ttm_bo_eviction_valuable,
 	.evict_flags = mgag200_bo_evict_flags,
 	.move = mgag200_bo_move,
 	.verify_access = mgag200_bo_verify_access,
 	.io_mem_reserve = &mgag200_ttm_io_mem_reserve,
 	.io_mem_free = &mgag200_ttm_io_mem_free,
-	.lru_tail = &ttm_bo_default_lru_tail,
-	.swap_lru_tail = &ttm_bo_default_swap_lru_tail,
 };
 
 int mgag200_mm_init(struct mga_device *mdev)