mtd: convert remaining users to mtd_device_register()

The older add_mtd_device()/add_mtd_partitions() and their removal
counterparts will soon be gone.  Replace uses with mtd_device_register()
and mtd_device_unregister().

Signed-off-by: Jamie Iles <jamie@jamieiles.com>
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
diff --git a/drivers/mtd/maps/dbox2-flash.c b/drivers/mtd/maps/dbox2-flash.c
index cfacfa6..85bdece 100644
--- a/drivers/mtd/maps/dbox2-flash.c
+++ b/drivers/mtd/maps/dbox2-flash.c
@@ -93,7 +93,7 @@
 		mymtd->owner = THIS_MODULE;
 
                 /* Create MTD devices for each partition. */
-	        add_mtd_partitions(mymtd, partition_info, NUM_PARTITIONS);
+		mtd_device_register(mymtd, partition_info, NUM_PARTITIONS);
 
 		return 0;
 	}
@@ -105,7 +105,7 @@
 static void __exit cleanup_dbox2_flash(void)
 {
 	if (mymtd) {
-		del_mtd_partitions(mymtd);
+		mtd_device_unregister(mymtd);
 		map_destroy(mymtd);
 	}
 	if (dbox2_flash_map.virt) {