security/selinux/ss/ebitmap.c: fix sparse warnings

Index: linux-2.6.11-bk3-sparse/security/selinux/ss/ebitmap.c
===================================================================
@@ -239,8 +239,9 @@ int ebitmap_read(struct ebitmap *e, void
 {
 	int rc;
 	struct ebitmap_node *n, *l;
-	u32 buf[3], mapsize, count, i;
-	u64 map;
+	__le32 buf[3];
+	u32 mapsize, count, i;
+	__le64 map;
 
 	ebitmap_init(e);