Replace fc_to_str with address_to_str or tvb_fc_to_str.

Change-Id: I69bf25f5abb9d6ad325f922fab73b6f0cf8ca2ea
Reviewed-on: https://code.wireshark.org/review/6035
Petri-Dish: Anders Broman <a.broman58@gmail.com>
Tested-by: Petri Dish Buildbot <buildbot-no-reply@wireshark.org>
Reviewed-by: Anders Broman <a.broman58@gmail.com>