Update submodules after removing Hikey

Change-Id: Icf5c03fe52970a6cb863dde153bb4cd5a547814d
diff --git a/project/reference b/project/reference
index 3d7b88b..d35cafd 160000
--- a/project/reference
+++ b/project/reference
@@ -1 +1 @@
-Subproject commit 3d7b88b84e2e9130eb25a0c59bc4475af5c933bc
+Subproject commit d35cafd3b2f0d758c753c7058bed3daabd40b909