video: Rename CONFIG_DM_VIDEO to CONFIG_VIDEO

Now that all the old code is gone, rename this option. Driver model
migration is now complete.

Signed-off-by: Simon Glass <sjg@chromium.org>
diff --git a/cmd/bdinfo.c b/cmd/bdinfo.c
index c454e6e..bf002f8 100644
--- a/cmd/bdinfo.c
+++ b/cmd/bdinfo.c
@@ -122,7 +122,7 @@
 	bdinfo_print_num_l("fdt_blob", (ulong)gd->fdt_blob);
 	bdinfo_print_num_l("new_fdt", (ulong)gd->new_fdt);
 	bdinfo_print_num_l("fdt_size", (ulong)gd->fdt_size);
-	if (IS_ENABLED(CONFIG_DM_VIDEO))
+	if (IS_ENABLED(CONFIG_VIDEO))
 		show_video_info();
 #if CONFIG_IS_ENABLED(MULTI_DTB_FIT)
 	bdinfo_print_num_l("multi_dtb_fit", (ulong)gd->multi_dtb_fit);