Bluetooth: hci_core: Fix using ll_privacy_capable for current settings

ll_privacy_capable only indicates that the controller supports the
feature but it doesnt' check that LE is enabled so it end up being
marked as active in the current settings when it shouldn't.

Fixes: ad383c2c ("Bluetooth: hci_sync: Enable advertising when LL privacy is enabled")
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>