drm/nouveau: switch the TTM backends to self alloc

Similar to the TTM range manager.

Signed-off-by: Christian König <[e-mail]>
Reviewed-by: Matthew Auld <[e-mail]>
Link: https://patchwork.freedesktop.org/patch/msgid/[e-mail]

drivers/gpu/drm/nouveau/nouveau_mem.h

···
 }
 
 struct nouveau_mem {
+	struct ttm_resource base;
 	struct nouveau_cli *cli;
 	u8 kind;
 	u8 comp;

drivers/gpu/drm/nouveau/nouveau_ttm.c

···
 	if (ret)
 		return ret;
 
+	ttm_resource_init(bo, place, reg->mm_node);
+
 	ret = nouveau_mem_vram(reg, nvbo->contig, nvbo->page);
 	if (ret) {
 		nouveau_mem_del(reg);
···
 	if (ret)
 		return ret;
 
+	ttm_resource_init(bo, place, reg->mm_node);
 	reg->start = 0;
 	return 0;
 }
···
 	if (ret)
 		return ret;
 
+	ttm_resource_init(bo, place, reg->mm_node);
 	ret = nvif_vmm_get(&mem->cli->vmm.vmm, PTES, false, 12, 0,
 			   (long)reg->num_pages << PAGE_SHIFT, &mem->vma[0]);
 	if (ret) {