news: Add support for setting TSC frequency

Signed-off-by: NJiri Denemark <jdenemar@redhat.com>

docs/news.xml

@@ -72,6 +72,15 @@
           introducing a new host device type in the XML.
         </description>
       </change>
+      <changes>
+        <summary>
+          qemu: Add support for setting TSC frequency
+        </summary>
+        <description>
+          Setting TSC frequency is required to enable migration for domains
+          with 'invtsc' CPU feature turned on.
+        </description>
+      </changes>
     </section>
     <section title="Improvements">
       <change>