mtd: ixp: convert to mtd_device_register()

Convert to mtd_device_register() and remove the CONFIG_MTD_PARTITIONS
preprocessor conditionals as partitioning is always available.

Cc: Imre Kaloz <kaloz@openwrt.org>
Cc: Krzysztof Halasa <khc@pm.waw.pl>
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/ixp2000.c b/drivers/mtd/maps/ixp2000.c
index 9639d83..c00b917 100644
--- a/drivers/mtd/maps/ixp2000.c
+++ b/drivers/mtd/maps/ixp2000.c
@@ -119,7 +119,7 @@
 		return 0;
 
 	if (info->mtd) {
-		del_mtd_partitions(info->mtd);
+		mtd_device_unregister(info->mtd);
 		map_destroy(info->mtd);
 	}
 	if (info->map.map_priv_1)
@@ -230,7 +230,7 @@
 
 	err = parse_mtd_partitions(info->mtd, probes, &info->partitions, 0);
 	if (err > 0) {
-		err = add_mtd_partitions(info->mtd, info->partitions, err);
+		err = mtd_device_register(info->mtd, info->partitions, err);
 		if(err)
 			dev_err(&dev->dev, "Could not parse partitions\n");
 	}