telephony: DataConnection: support old RILs

Older RILs require different technology value

Change-Id: Ia72bb1229132a00b5c343c0467823b895f0338d0
HTCQualcommRIL: properly reset radio on RIL_CONNECTED

* Resets radio on RIL_CONNECTED, but only after the first RIL_CONNECTED
  response.

Change-Id: I94a56d97eca173b8bcc5b38e59ee43740d2ef74a
cdma: Restore SVDO after merge.

Allow evdo/ehrpd + voice simutaneously.
Use ro.ril.svdo=true

Change-Id: If7be25edc10f21680adbe3a059370d77a82ef076