telephony: fix Network Operators list on Samsung Qualcomm devices

setNetworkSelectionModeManual() and responseOperatorInfos() are overridden
in QualcommSharedRIL with code that breaks Samsung Qualcomm RIL's.
Override them, again, to put back the original functionality found in
RIL.java.

Change-Id: I7ac663a60edf62c80cdac831443ca6cddbe3702c