mtd: spi-nor: intel-spi: use mtd_device_register()

This driver doesn't specify parsers so it can use that little helper.
Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com>

drivers/mtd/spi-nor/intel-spi.c

@@ -908,7 +908,7 @@ struct intel_spi *intel_spi_probe(struct device *dev,
 	if (!ispi->writeable || !writeable)
 		ispi->nor.mtd.flags &= ~MTD_WRITEABLE;
 
-	ret = mtd_device_parse_register(&ispi->nor.mtd, NULL, NULL, &part, 1);
+	ret = mtd_device_register(&ispi->nor.mtd, &part, 1);
 	if (ret)
 		return ERR_PTR(ret);