Add the additional instruction of enabling CWMP service

Change-Id: Ife887f277c4f84a7aee0bbbc85f673ac5f71e2a3
diff --git a/developer/aiabhw.rst b/developer/aiabhw.rst
index e7ee7db..339f187 100644
--- a/developer/aiabhw.rst
+++ b/developer/aiabhw.rst
@@ -331,6 +331,9 @@
 
 The configuring path is: TR098 > MgmtServer > Device.ManagementServer.URL
 
+1. Check the EnableCWMP option to enable the management function.
+2. Fill the eNodeBD URL into Device.ManagementServer.URL field.
+
 After you fill in the AiaB IP with eNodeBD service port as URL into the field, you need to restart the device.
 And you will be able to see the eNodeBD log by the following command (the pod name may be different)::