drivers/video: fsl-diu-fb: set correct framebuffer flags

The DIU uses system RAM for the framebuffer, so FBINFO_VIRTFB should be set.

Since the framebuffer is in system RAM, it can be read from more quickly
than written to, so FBINFO_READS_FAST should be set.

We can also set FBINFO_PARTIAL_PAN_OK for the same reasons.
Signed-off-by: Timur Tabi <timur@freescale.com>
Signed-off-by: Florian Tobias Schandinat <FlorianSchandinat@gmx.de>

drivers/video/fsl-diu-fb.c

@@ -1231,7 +1231,8 @@ static int __devinit install_fb(struct fb_info *info)
 
 	info->var.activate = FB_ACTIVATE_NOW;
 	info->fbops = &fsl_diu_ops;
-	info->flags = FBINFO_DEFAULT;
+	info->flags = FBINFO_DEFAULT | FBINFO_VIRTFB | FBINFO_PARTIAL_PAN_OK |
+		FBINFO_READS_FAST;
 	info->pseudo_palette = mfbi->pseudo_palette;
 
 	rc = fb_alloc_cmap(&info->cmap, 16, 0);