msm8960-common: update libril from qcril branch

Change-Id: I537e88ba853d48dce05d3a6a607c0cba789aeb6e
libril: update unsol htc responses and add support for m7.

Change-Id: Ibc17332b40c465f89a85fa078604a690b588f6f2
msm8960-common: libril: clarify naming of VOICE_RADIO_TECH_CHANGED

* For some reason there are two of these named very similarly to each
  other.

Change-Id: I1b8869395176852e675485edae714bec616f35d1
msm8960-common: disable unused QCOM decoders

* We don't actually build these decoders, don't advertise them.

Change-Id: I1b7ce44ef2befb054791f715b211416b82d6eafc