mtd: drivers/mtd/nand/s3c2410.c: use resource_size()

Use resource_size().

Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Cc: Ben Dooks <ben-linux@fluff.org>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>

drivers/mtd/nand/s3c2410.c

@@ -957,7 +957,7 @@ static int s3c24xx_nand_probe(struct platform_device *pdev)
 
 	/* currently we assume we have the one resource */
 	res  = pdev->resource;
-	size = res->end - res->start + 1;
+	size = resource_size(res);
 
 	info->area = request_mem_region(res->start, size, pdev->name);