Document the libffi FreeBSD fix.
diff --git a/Misc/NEWS b/Misc/NEWS
index f3ba45b..3bd058d 100644
--- a/Misc/NEWS
+++ b/Misc/NEWS
@@ -243,6 +243,9 @@
 
 - Issue #7705: Fix linking on FreeBSD.
 
+- Make sure that the FreeBSD build of the included libffi uses the proper
+  assembly file.
+
 C-API
 -----