MSIM: Fix for default voice subscription change

- If there is a delay in reading FullIccSerialNumber value
  for one of the SIM, the default voice preference is reset
  to the SIM for which the serial number is already read.
- Remove getFullIccSerialNumber() condition as check for
  provision status & mSubscriptionManager.isActiveSubId()
  are sufficient to determine SIM records availability

Change-Id: I60acd98832a1d9fac3d2384867fb274b1796f5b0
CRs-Fixed: 2058977
1 file changed