Handle outgoing call broadcast with Telecom's permissions

The default dialer may not have MODIFY_PHONE_STATE permissions
anymore which is needed to start the outgoing call. We've
already checked for permissions at this point so do the
rest of the broadcast with Telecom's permissions.

Bug: 20304411
Change-Id: I50cfa75ae27072237ea7b6b8fe2a5113b8d1d959