video: Avoid setting global_data fb_base from SPL handoff

This field is not used, so don't set it.

Signed-off-by: Simon Glass <sjg@chromium.org>
diff --git a/drivers/video/video-uclass.c b/drivers/video/video-uclass.c
index e358a79..ef780a6 100644
--- a/drivers/video/video-uclass.c
+++ b/drivers/video/video-uclass.c
@@ -224,7 +224,6 @@
 		return -ENOENT;
 
 	gd->video_bottom = ho->fb;
-	gd->fb_base = ho->fb;
 	gd->video_top = ho->fb + ho->size;
 	debug("%s: Reserving %lx bytes at %08x as per bloblist received\n",
 	      __func__, (unsigned long)ho->size, (u32)ho->fb);