add servo/rust-bindgen

Author: edunham

homu/files/cfg.toml

@@ -41,6 +41,7 @@ secret = "{{ pillar["homu"]["web-secret"] }}"
     ('servo', 'libfreetype2'),
     ('servo', 'mozjs'),
     ('servo', 'rust-azure'),
+    ('servo', 'rust-bindgen'),
     ('servo', 'rust-cssparser'),
     ('servo', 'rust-fnv'),
     ('servo', 'rust-fontconfig'),