nvidiafb: adjust flags to take advantage of new scroll method

The SCROLL_MOVE method has been optimized such that it is significantly faster
than SCROLL_REDRAW.  Adjust flags to indicate that blitting is preferred over
rendering.

Signed-off-by: Antonino Daplas <adaplas@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

drivers/video/nvidia/nvidia.c

@@ -674,6 +674,7 @@ static int nvidiafb_set_par(struct fb_info *info)
 		info->fbops->fb_sync = nvidiafb_sync;
 		info->pixmap.scan_align = 4;
 		info->flags &= ~FBINFO_HWACCEL_DISABLED;
+		info->flags |= FBINFO_READS_FAST;
 		NVResetGraphics(info);
 	} else {
 		info->fbops->fb_imageblit = cfb_imageblit;
@@ -682,6 +683,7 @@ static int nvidiafb_set_par(struct fb_info *info)
 		info->fbops->fb_sync = NULL;
 		info->pixmap.scan_align = 1;
 		info->flags |= FBINFO_HWACCEL_DISABLED;
+		info->flags &= ~FBINFO_READS_FAST;
 	}
 
 	par->cursor_reset = 1;