Add the conditions that determine the region for US, CA and JP

Region is incorrect when dual SIM is inserted.
ToneGenerator class doesn't consider the dual SIM use case,
so region is always set to a default value(CEPT) even if
these country's dual SIMs are inserted.

Change-Id: Iad684856f550b50345b71d8c07e99e27f87407a7
1 file changed