Account for User's Voice SIM preference for E911

Currently, we do not take into account a user's Voice SIM preference
when making an emergency call. The CreateConnectionProcessor now first
trys to use the Voice SIM preference of the user and backs up to other
SIM accounts if that account fails.

Bug: 27059146
Change-Id: Ic64ecdd23fe081f9660820e5659d314f2c9b9902
3 files changed