Bluetooth: Fix BR/EDR Page Scan update with Add Device

The recent changes to remove dependency on HCI in Add Device missed
out relevant changes for BR/EDR. This patch removes the left-overs and
ensures the right HCI command gets queued for BR/EDR.

Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>