drm/nve0/fb: turn off some bits in 10f584 at init

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
diff --git a/drivers/gpu/drm/nouveau/core/subdev/fb/ramnve0.c b/drivers/gpu/drm/nouveau/core/subdev/fb/ramnve0.c
index 025c2915..3257c52 100644
--- a/drivers/gpu/drm/nouveau/core/subdev/fb/ramnve0.c
+++ b/drivers/gpu/drm/nouveau/core/subdev/fb/ramnve0.c
@@ -1178,6 +1178,7 @@
 		data += 4;
 	}
 	nv_wr32(pfb, 0x10f65c, save);
+	nv_mask(pfb, 0x10f584, 0x11000000, 0x00000000);
 
 	switch (ram->base.type) {
 	case NV_MEM_TYPE_GDDR5: