fb-defio: Inhibit VM_IO flag to be set on vmalloc-ed framebuffers.

The framebuffers (screenbase) these drivers present are actually
vmalloc-ed pages. There is no need for them to have the VM_IO flag set.

Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Acked-by: Jaya Kumar <jayakumar.lkml@gmail.com>
diff --git a/drivers/video/metronomefb.c b/drivers/video/metronomefb.c
index df1f757..661bfd20 100644
--- a/drivers/video/metronomefb.c
+++ b/drivers/video/metronomefb.c
@@ -700,7 +700,7 @@
 	if (retval < 0)
 		goto err_free_irq;
 
-	info->flags = FBINFO_FLAG_DEFAULT;
+	info->flags = FBINFO_FLAG_DEFAULT | FBINFO_VIRTFB;
 
 	info->fbdefio = &metronomefb_defio;
 	fb_deferred_io_init(info);