ts_31_102: Fix EF.NIA FID

The FID in ADF.USIM is different from the FID in DF.GSM.  So while
we can re-use the ts_51_011 EF_NIA class definition, we must pass in
a different fid to the constructor.

Change-Id: Ib414d5b476666e276824266e33b341175a2ee05a
diff --git a/pySim/ts_31_102.py b/pySim/ts_31_102.py
index a54d600..a340d32 100644
--- a/pySim/ts_31_102.py
+++ b/pySim/ts_31_102.py
@@ -1532,7 +1532,7 @@
             EF_MMSICP(service=52),
             EF_MMSUP(service=52),
             EF_MMSUCP(service=(52, 55)),
-            EF_NIA(service=56),
+            EF_NIA(service=56, fid='6fd3'),
             EF_VGCS(service=57),
             EF_VGCSS(service=57),
             EF_VGCS('6fb3', None, 'EF.VBS', 'Voice Broadcast Service', service=58),