Telephony: Always allow ignored sms packages for premium sms.

  Also clean up redundant code by creating a new method (resolvePackageName).

Change-Id: I14eafe2c1ae007c1a8d9c1270a832a2c92f3a04e
Merge pull request #19 from CyanogenMod/cm-11.0

Telephony: Always allow ignored sms packages for premium sms.