Some sims such as T-Mobile return incorrect languages for their
PL(Preferred languages). Lookup the locale via the MccTable instead,
and fallback to trusting the sim.
Change-Id: I612d4952355ce4a42b35579e1f9aa879417c4cd4
SubscriptionController exists in the telephony process and cannot
be accessed by SetupWizard.
getInstance() will always return null.
Change-Id: I017682d3aad539e1954348664b1c1fec7f76009d
