Make mtdblock_ro unconditionally readonly

mtdblock_ro is by definition readonly.  Remove the silly checks.

Signed-off-by: Jörn Engel <joern@wohnheim.fh-wedel.de>
Signed-off-by: David Woodhouse <dwmw2@infradead.org>
diff --git a/drivers/mtd/mtdblock_ro.c b/drivers/mtd/mtdblock_ro.c
index 0c830ba..29563ed 100644
--- a/drivers/mtd/mtdblock_ro.c
+++ b/drivers/mtd/mtdblock_ro.c
@@ -45,9 +45,7 @@
 	dev->blksize = 512;
 	dev->size = mtd->size >> 9;
 	dev->tr = tr;
-	if ((mtd->flags & (MTD_CLEAR_BITS|MTD_SET_BITS|MTD_WRITEABLE)) !=
-	    (MTD_CLEAR_BITS|MTD_SET_BITS|MTD_WRITEABLE))
-		dev->readonly = 1;
+	dev->readonly = 1;
 
 	add_mtd_blktrans_dev(dev);
 }