CRAS: bt_device - Log stable id of bt_device

In order to tell different BT devices in dump log, this
change moves the stable_id field into bt_device and
specifically created CONNECTED, DISCONNECTED events to
log stable_id with.

BUG=b:181831987
TEST=cras_test_client --dump_bt | grep stable_id
can see clearly which device is related to the event
we care in BT dump.

Change-Id: If628181eda912fe9460e0d0b47824343305cc9c4
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/third_party/adhd/+/2739018
Reviewed-by: Hsinyu Chao <hychao@chromium.org>
Commit-Queue: Hsinyu Chao <hychao@chromium.org>
Tested-by: Hsinyu Chao <hychao@chromium.org>
13 files changed