drm/nouveau: quiet some static-related sparse noise

drivers/gpu/drm/nouveau/core/core/gpuobj.c

drivers/gpu/drm/nouveau/core/core/object.c

drivers/gpu/drm/nouveau/core/core/option.c

drivers/gpu/drm/nouveau/core/engine/copy/fuc/nva3.fuc.h

drivers/gpu/drm/nouveau/core/engine/copy/fuc/nvc0.fuc.h

drivers/gpu/drm/nouveau/core/engine/crypt/fuc/nv98.fuc.h

drivers/gpu/drm/nouveau/core/engine/disp/vga.c

drivers/gpu/drm/nouveau/core/engine/fifo/base.c

drivers/gpu/drm/nouveau/core/engine/fifo/nv84.c

drivers/gpu/drm/nouveau/core/engine/graph/fuc/gpcnvc0.fuc.h

drivers/gpu/drm/nouveau/core/engine/graph/fuc/hubnvc0.fuc.h

drivers/gpu/drm/nouveau/core/engine/graph/nv40.c

drivers/gpu/drm/nouveau/core/engine/graph/nv50.c

drivers/gpu/drm/nouveau/core/engine/mpeg/nv31.c

drivers/gpu/drm/nouveau/core/subdev/bios/conn.c

drivers/gpu/drm/nouveau/core/subdev/mxm/base.c

drivers/gpu/drm/nouveau/core/subdev/vm/nv50.c

drivers/gpu/drm/nouveau/core/subdev/vm/nvc0.c

drivers/gpu/drm/nouveau/nouveau_chan.c

drivers/gpu/drm/nouveau/nouveau_dp.c