Add the fidl repo

Change-Id: I7855d45d482defbbb196ed3d1c98268f3860b4e5
diff --git a/scripts/gitsync/list-of-repos.txt b/scripts/gitsync/list-of-repos.txt
index 221810e..c9757a1 100644
--- a/scripts/gitsync/list-of-repos.txt
+++ b/scripts/gitsync/list-of-repos.txt
@@ -10,6 +10,7 @@
 drivers/wifi
 dynamic_bindings
 escher
+fidl
 fonts
 fortune
 ftl