msm8960-common: RIL: add more responses and handle them

ril.cpp: don't return when exceeding the default 1000+number-of-elements
    but try to match custom responses

ril_unsol_commands.h: add htc custom responses and their parameters
    to be passed on to RILJ

telephony/ril.h: define htc custom responses

PatchSet2: removed verbose logging

Change-Id: Ied76a89d6a758b6a646d1d9128ec0dcbb2786ac9