Fix bluetooth_nrf52.py to have a KNOWN_DEVICE_SET parameter

This parameter is expected by chameleond in few locations, and without it
the auto-test bluetooth_AdapterHIDReports.ble_mouse fails.

BUG=chromium:923046
TEST=run bluetooth_AdapterHIDReports.ble_mouse on setup that includes
nRF52 devkit attached to Fizz.
e.g test_that -b vayne vaynemanor bluetooth_AdapterHIDReports.ble_mouse
    --autotest_dir=. --args "chameleon_host=vaynemanor-chameleon"

Change-Id: I39bd121ce6782d620afa50645c522c66d04b5ffd
Reviewed-on: https://chromium-review.googlesource.com/1541444
Commit-Ready: Yoni Shavit <yshavit@chromium.org>
Tested-by: Yoni Shavit <yshavit@chromium.org>
Reviewed-by: Neeraj Poojary <npoojary@google.com>
Reviewed-by: Yoni Shavit <yshavit@chromium.org>
1 file changed