Fix the roaming searching text display in standby screen

Display roaming searching text in the device when cdma subscription
source is NV.As per current implementation, ERI file is always loaded
ir-respective of NV or RUIM.

Conflicts:
        src/java/com/android/internal/telephony/cdma/CdmaLteServiceStateTracker.java

Change-Id: I6858e47e669ad5068481d516fb36606e7cb55bb6
CRs-Fixed: 646971