SamsungExynos3RIL: fix sim PIN handling

- fake sim status changed on incorrect PIN (rebase from RIL)
- notify PIN-correct using RADIO_ON instead of on signal strength
  (causes ICC to be queried all the time if no SIM is inserted)

Change-Id: I59bbbce9ac90473aa9efe551198822e253818d85
Merge "SamsungExynos3RIL: fix sim PIN handling" into cm-10.2