ML2: Update a comment after the recent bind_port change

A missing comment update in
commit b1677dcb80ce8b83aadb2180efad3527a96bd3bc.

No functional changes.

Change-Id: Icf1bd66a8c093d0b40632e22be662a3c8ba5c48b
Merge "ML2: Update a comment after the recent bind_port change"