apdu/ts_102_221: SELECT: allow select of SELF

While in the pySim-shell, it's useful to filter the currently selected
file from the choice of available files for select, this doesn't apply
for the tracing case: It's perfectly valid for the UE to SELECT the
file that's already selected right now.  The operation basically
becomes equivalent to a STATUS.

Change-Id: I1a20fb3ba70426333ac34448c6cb782c51363965

pySim/apdu/ts_102_221.py

@@ -66,7 +66,7 @@ class UiccSelect(ApduCommand, n='SELECT', ins=0xA4, cla=['0X', '4X', '6X']):
                     # iterate to next element in path
                     continue
                 else:
-                    sels = lchan.selected_file.get_selectables(['FIDS','MF','PARENT'])
+                    sels = lchan.selected_file.get_selectables(['FIDS','MF','PARENT','SELF'])
                     if file_hex in sels:
                         if self.successful:
                             #print("\tSELECT %s" % sels[file_hex])
@@ -80,7 +80,7 @@ class UiccSelect(ApduCommand, n='SELECT', ins=0xA4, cla=['0X', '4X', '6X']):
         elif mode == 'df_ef_or_mf_by_file_id':
             if len(self.cmd_data) != 2:
                 raise ValueError('Expecting a 2-byte FID')
-            sels = lchan.selected_file.get_selectables(['FIDS','MF','PARENT'])
+            sels = lchan.selected_file.get_selectables(['FIDS','MF','PARENT','SELF'])
             file_hex = b2h(self.cmd_data)
             if file_hex in sels:
                 if self.successful: