Bluetooth: Enable page scan also if there are white list entries

Page scan should be enabled either if the connectable setting is set or
if there are any entries in the BR/EDR white list. This patch implements
such behavior by updating the two places that were making decisions on
whether to enable page scan or not.

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