cards: populate name property in Card, UsimCard and IsimCard

Even though Card, UsimCard and IsimCard are abstract classes which are
normally only used to inherit from mit may make sense to pre-populate
the name property with some meaningful value.

Change-Id: Id643e1f83718aea073e7200aecbf2db2def8652f

pySim/cards.py

@@ -34,6 +34,8 @@ from pytlv.TLV import *
 
 class Card(object):
 
+	name = 'SIM'
+
 	def __init__(self, scc):
 		self._scc = scc
 		self._adm_chv_num = 4
@@ -291,6 +293,9 @@ class Card(object):
 		self._scc.update_record(ef, rec_no, "ff" * len, force_len=False, verify=True)
 
 class UsimCard(Card):
+
+	name = 'USIM'
+
 	def __init__(self, ssc):
 		super(UsimCard, self).__init__(ssc)
 
@@ -361,6 +366,9 @@ class UsimCard(Card):
 		return sw
 
 class IsimCard(Card):
+
+	name = 'ISIM'
+
 	def __init__(self, ssc):
 		super(IsimCard, self).__init__(ssc)