py_gen: move TLVs into their own module
diff --git a/py_gen/templates/init.py b/py_gen/templates/init.py
index f66e62a..3b73baa 100644
--- a/py_gen/templates/init.py
+++ b/py_gen/templates/init.py
@@ -38,6 +38,7 @@
 :: #endif
 :: if version >= 4:
 import meter_band
+import bsn_tlv
 :: #endif
 from const import *
 from common import *
diff --git a/py_gen/templates/module.py b/py_gen/templates/module.py
index 30c45ad..02f0002 100644
--- a/py_gen/templates/module.py
+++ b/py_gen/templates/module.py
@@ -46,6 +46,7 @@
 import action_id
 import instruction_id
 import meter_band
+import bsn_tlv
 :: #endif
 import util
 import loxi.generic_util