Bluetooth: Fix connectable and discoverable supported settings values

The connectable and discoverable mgmt settings are supported both for LE
and BR/EDR controllers so they do not belong behind a lmp_bredr_capable()
condition. This patch fixes the issue in get_supported_settings().

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