tegra3-common: Add HTC RIL daemon service

We need at least the rild-audio-gsm socket for adjusting the in-call volume
when using the HTC libril/libcall_volume.

Change-Id: I4505ac575102c7914ef51d358c8e14af356dc307
tegra3-common: RIP polly, you served us well

Change-Id: Idf50c582598a851bb32baa1cc08ca751e80c0bad