Support non-utf-16 encoded SPN on SIM

On some SIMs the SPN uses different encoding and when assuming utf-16,
parsing would fail. This lead to inconsistent SPN display in different
UI components, operator name in status bar vs. SIM settings.

Issue: ALM:11199569
Issue: FP4-542
Issue: FP4-INT#11
Issue: FP4-INT#13
Change-Id: I48a39f76b0396210e39dfbf47a2a3c932329f6ba
(cherry picked from commit ef84e241c56abba9280034ad20547a0577f32fe2)
1 file changed