drm/nouveau: use designated initializers

Prepare to mark sensitive kernel structures for randomization by making
sure they're using designated initializers. These were identified during
allyesconfig builds of x86, arm, and arm64, with most initializer fixes
extracted from grsecurity.
Signed-off-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/20161217010442.GA140619@beast

drivers/gpu/drm/nouveau/nouveau_ttm.c

@@ -107,10 +107,10 @@ nouveau_vram_manager_new(struct ttm_mem_type_manager *man,
 }
 
 const struct ttm_mem_type_manager_func nouveau_vram_manager = {
-	nouveau_vram_manager_init,
-	nouveau_vram_manager_fini,
-	nouveau_vram_manager_new,
-	nouveau_vram_manager_del,
+	.init = nouveau_vram_manager_init,
+	.takedown = nouveau_vram_manager_fini,
+	.get_node = nouveau_vram_manager_new,
+	.put_node = nouveau_vram_manager_del,
 };
 
 static int
@@ -184,11 +184,11 @@ nouveau_gart_manager_debug(struct ttm_mem_type_manager *man, const char *prefix)
 }
 
 const struct ttm_mem_type_manager_func nouveau_gart_manager = {
-	nouveau_gart_manager_init,
-	nouveau_gart_manager_fini,
-	nouveau_gart_manager_new,
-	nouveau_gart_manager_del,
-	nouveau_gart_manager_debug
+	.init = nouveau_gart_manager_init,
+	.takedown = nouveau_gart_manager_fini,
+	.get_node = nouveau_gart_manager_new,
+	.put_node = nouveau_gart_manager_del,
+	.debug = nouveau_gart_manager_debug
 };
 
 /*XXX*/
@@ -257,11 +257,11 @@ nv04_gart_manager_debug(struct ttm_mem_type_manager *man, const char *prefix)
 }
 
 const struct ttm_mem_type_manager_func nv04_gart_manager = {
-	nv04_gart_manager_init,
-	nv04_gart_manager_fini,
-	nv04_gart_manager_new,
-	nv04_gart_manager_del,
-	nv04_gart_manager_debug
+	.init = nv04_gart_manager_init,
+	.takedown = nv04_gart_manager_fini,
+	.get_node = nv04_gart_manager_new,
+	.put_node = nv04_gart_manager_del,
+	.debug = nv04_gart_manager_debug
 };
 
 int