goldfish: add ril

Create goldfish's own ril so it is not coupled
with reference-ril, and we can further customize it
for goldfish's need

BUG: 110047214

This initial version is taken from hardware/ril

commit 982ba7ab0767df77b0cda7f592bfde7e8b6cb53d
Author: Sooraj Sasindran <sasindran@google.com>
Date:   Mon May 7 21:20:43 2018 -0700

    Add scan error to Network Scan result

Merged-In: I07a938a8a6e9af368f51540f2c5f9627099017d7
(cherry picked from commit 8506e4eab86b62a662770a08081e599ab79bae02)
11 files changed