Adtran ONU/OLT updates for BBWF demo

Change-Id: I282a9136fd136db35dd7ea890dc3899d0aabbaf6
diff --git a/voltha/adapters/adtran_olt/net/pio_zmq.py b/voltha/adapters/adtran_olt/net/pio_zmq.py
index 2fd4048..6b57295 100644
--- a/voltha/adapters/adtran_olt/net/pio_zmq.py
+++ b/voltha/adapters/adtran_olt/net/pio_zmq.py
@@ -17,7 +17,7 @@
 from adtran_zmq import AdtranZmqClient
 from enum import IntEnum
 
-DEFAULT_PIO_TCP_PORT = 5657
+DEFAULT_PIO_TCP_PORT = 5555
 
 
 class PioClient(AdtranZmqClient):