RIL: allow overriding of per-network elements

Original change on CyanogenMod:

	commit d76a3247a3547e7c7a95a13db7cfa1ec2a061f3d
	Author: Mike Kasick <mike@kasick.org>
	Date:   Thu Aug 30 13:42:27 2012 -0400

	    RILs: Eliminate repeated overrides of responseOperatorInfos.

	    - Add mQANElements field, default to 4 in RIL, use in responseOperatorInfos.
	      This may be set to 5 in subclassed RIL constructors.

	    - Remove repeated overrides of responseOperatorInfos by subclassed RILs, as
	      there's no logic change, just a disagreement as to whether the
	      QUERY_AVAILABLE_NETWORKS response is an array with 4 or 5 per-network
	      elements.

	    - Size OperatorInfo ArrayList appropriately in SemcRIL and SonyQualcommRIL.

	    Change-Id: I1254a670d8611f76aad13a6f197c67012c7d4c47

Change-Id: I785e4b0bc150bc1d74627170b9a79fa579bc6415