GitLab

- Add a PDP type parameter to REQUEST_SETUP_DATA_CALL.
  Make this backwards compatible: if we're called with a PDP type parameter and
  the RIL doesn't support it, remove the parameter from the request so the RIL
  never sees it.
- Change the description of the address field in the RIL_Data_Call_Response
  structure and in the response to RIL_REQUEST_SETUP_DATA_CALL from an address
  to a space-separated list of addresses. This preserves both source and binary
  compatibility but allows new RILs to return both an IPv4 and an IPv6 address
  for dual-stack data calls.

Change-Id: I0a77fc57c042bedfd18068c7faf7637a46f476d5