Update fontchain to read from additional sequences

Test: make fontchain_lint

Bug: 37520224
Bug: 37169477
Change-Id: Ie01a2aca85314701654cc2397f0bcf8eafdbe608
diff --git a/tools/fonts/fontchain_lint.py b/tools/fonts/fontchain_lint.py
index f5b9042..c0475ee 100755
--- a/tools/fonts/fontchain_lint.py
+++ b/tools/fonts/fontchain_lint.py
@@ -428,7 +428,8 @@
     _text_variation_sequences, _emoji_variation_sequences = sequences
     _emoji_sequences = parse_unicode_datafile(
         path.join(ucd_path, 'emoji-sequences.txt'))
-
+    _emoji_sequences.update(parse_unicode_datafile(
+        path.join(ucd_path, 'additions', 'emoji-sequences.txt')))
     _emoji_zwj_sequences = parse_unicode_datafile(
         path.join(ucd_path, 'emoji-zwj-sequences.txt'))
     _emoji_zwj_sequences.update(parse_unicode_datafile(