yaffs2: Use lldiv for 64bit division

Signed-off-by: Tom Rini <trini@ti.com>
diff --git a/fs/yaffs2/yaffs_uboot_glue.c b/fs/yaffs2/yaffs_uboot_glue.c
index e113e40..50000a1 100644
--- a/fs/yaffs2/yaffs_uboot_glue.c
+++ b/fs/yaffs2/yaffs_uboot_glue.c
@@ -20,6 +20,7 @@
  */
 
 #include <common.h>
+#include <div64.h>
 
 #include <config.h>
 #include "nand.h"
@@ -184,7 +185,7 @@
 	}
 
 	if (end_block == 0)
-		end_block = mtd->size / mtd->erasesize - 1;
+		end_block = lldiv(mtd->size, mtd->erasesize - 1);
 
 	if (end_block < start_block) {
 		printf("Bad start/end\n");