Check in strace's generated xlat files.

These were hidden by another .gitignore file.

Change-Id: I5e392db7cdc4f5842eab2a43ff139d106adad63a
diff --git a/xlat/.gitignore b/xlat/.gitignore
new file mode 100644
index 0000000..3e8e62e
--- /dev/null
+++ b/xlat/.gitignore
@@ -0,0 +1 @@
+/Makemodule.am