hci: plumb disconnect reason codes to L2CAP

This allows us to later plumb it up to userspace.

BUG=none
TEST=builds

Change-Id: I052edf0e9f36909032176ed1319ba6502375e147
Reviewed-on: https://chromium-review.googlesource.com/604514
Commit-Ready: Dmitry Grinberg <dmitrygr@google.com>
Tested-by: Dmitry Grinberg <dmitrygr@google.com>
Reviewed-by: Dmitry Grinberg <dmitrygr@google.com>
Reviewed-by: Miao-chen Chou <mcchou@chromium.org>
3 files changed