Re-purpose helper method to be used for parsing Address TLV Object in general

The Address TLV object is used in EF.P-CSCF Address, EF.ePDGId and EF.ePDGIdEm.
See 3GPP TS 31.102 version 13.4.0 Release 13, section 4.2.8, 4.2.102 and 4.2.104.

Address TLV Object format
Tag (1 Byte) - '80'
Length (1 Byte)
Address Type (1 Byte) - '00' (FQDN), '01' (IPv4), '02' (IPv6)
Address (Address Length Bytes)

Change-Id: Ifd8a240f6b5c7736e58a8151295c30ec5b32ed5f
diff --git a/pySim-read.py b/pySim-read.py
index 2be34bd..c8b1a5d 100755
--- a/pySim-read.py
+++ b/pySim-read.py
@@ -35,7 +35,7 @@
 from pySim.commands import SimCardCommands
 from pySim.cards import card_detect, Card
 from pySim.utils import h2b, swap_nibbles, rpad, dec_imsi, dec_iccid, dec_msisdn
-from pySim.utils import format_xplmn_w_act, dec_spn, dec_st, init_reader, dec_epdgid
+from pySim.utils import format_xplmn_w_act, dec_spn, dec_st, init_reader, dec_addr_tlv
 from pySim.utils import h2s, format_ePDGSelection
 
 def parse_options():