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/sc520cdp.c b/drivers/mtd/maps/sc520cdp.c
index 4d8aaaf..8fead8e 100644
--- a/drivers/mtd/maps/sc520cdp.c
+++ b/drivers/mtd/maps/sc520cdp.c
@@ -266,10 +266,10 @@
 		/* Combine the two flash banks into a single MTD device & register it: */
 		merged_mtd = mtd_concat_create(mymtd, 2, "SC520CDP Flash Banks #0 and #1");
 		if(merged_mtd)
-			add_mtd_device(merged_mtd);
+			mtd_device_register(merged_mtd, NULL, 0);
 	}
 	if(devices_found == 3) /* register the third (DIL-Flash) device */
-		add_mtd_device(mymtd[2]);
+		mtd_device_register(mymtd[2], NULL, 0);
 	return(devices_found ? 0 : -ENXIO);
 }
 
@@ -278,11 +278,11 @@
 	int i;
 
 	if (merged_mtd) {
-		del_mtd_device(merged_mtd);
+		mtd_device_unregister(merged_mtd);
 		mtd_concat_destroy(merged_mtd);
 	}
 	if (mymtd[2])
-		del_mtd_device(mymtd[2]);
+		mtd_device_unregister(mymtd[2]);
 
 	for (i = 0; i < NUM_FLASH_BANKS; i++) {
 		if (mymtd[i])