minimalistic support for DF.MULTIMEDIA

No decode of the payload of the files yet, but let's at least
name them.

Change-Id: I2d9c56bdea08fe6629978b6a1f7c139f487d075a

pySim/ts_51_011.py

@@ -32,7 +32,7 @@ order to describe the files specified in the relevant ETSI + 3GPP specifications
 from pySim.profile import match_sim
 from pySim.profile import CardProfile
 from pySim.filesystem import *
-from pySim.ts_31_102_telecom import DF_PHONEBOOK
+from pySim.ts_31_102_telecom import DF_PHONEBOOK, DF_MULTIMEDIA
 import enum
 from pySim.construct import *
 from construct import Optional as COptional
@@ -500,6 +500,8 @@ class DF_TELECOM(CardDF):
             EF_CMI(),
             # not really part of 51.011 but something that TS 31.102 specifies may exist here.
             DF_PHONEBOOK(),
+            # not really part of 51.011 but something that TS 31.102 specifies may exist here.
+            DF_MULTIMEDIA(),
         ]
         self.add_files(files)