NEWS: Mark #328205 as fixed

git-svn-id: svn://svn.valgrind.org/valgrind/trunk@13741 a5019735-40e9-0310-863c-91ae7b9d1cf9
diff --git a/NEWS b/NEWS
index 4465c1b..110970a 100644
--- a/NEWS
+++ b/NEWS
@@ -4,6 +4,8 @@
 
 * ================== PLATFORM CHANGES =================
 
+328205  Implement additional Xen hypercalls
+
 * ==================== TOOL CHANGES ====================
 
 * Helgrind: