RIL: add functions from QualcommSharedRIL to HTCQualcommRIL

HTC msm8960 devices ville and evita require certain functions from QualcommSharedRIL

PatchSet1: just change HTCQualcommRIL to extend QualcommSharedRIL
PatchSet2: instead copy over the relevant parts to HTCQualcommRIL
PatchSet3: change patch name, was misleading

Change-Id: Iedf2bae0d13a7a45c25c6fa21d97deedb8240fbe