drm/nouveau: rename nvd0_display to nv50_display to reflect reality since merge

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

drivers/gpu/drm/nouveau/nv50_display.h

@@ -31,15 +31,15 @@
 #include "nouveau_crtc.h"
 #include "nouveau_reg.h"
 
-int  nvd0_display_create(struct drm_device *);
-void nvd0_display_destroy(struct drm_device *);
-int  nvd0_display_init(struct drm_device *);
-void nvd0_display_fini(struct drm_device *);
+int  nv50_display_create(struct drm_device *);
+void nv50_display_destroy(struct drm_device *);
+int  nv50_display_init(struct drm_device *);
+void nv50_display_fini(struct drm_device *);
 
-void nvd0_display_flip_stop(struct drm_crtc *);
-int  nvd0_display_flip_next(struct drm_crtc *, struct drm_framebuffer *,
+void nv50_display_flip_stop(struct drm_crtc *);
+int  nv50_display_flip_next(struct drm_crtc *, struct drm_framebuffer *,
 			    struct nouveau_channel *, u32 swap_interval);
 
-struct nouveau_bo *nvd0_display_crtc_sema(struct drm_device *, int head);
+struct nouveau_bo *nv50_display_crtc_sema(struct drm_device *, int head);
 
 #endif /* __NV50_DISPLAY_H__ */