ICC: Get EF_PLMNWACT to support user controlled PLMN list.

Add the EF_PLMNWACT ID into the SIM file handler.

Conflicts:
	src/java/com/android/internal/telephony/uicc/UsimFileHandler.java

Change-Id: I5c04729b6b7bfb6342c7fd3b968a9762eb92210a