Add guest mode functionality (4/4)

Add a flag to enable() to start Bluetooth in restricted
mode. In restricted mode, all devices that are paired during
restricted mode are deleted upon leaving restricted mode.
Right now restricted mode is only entered while a guest
user is active

Bug: 27410683
Change-Id: I7522a2a52de970bc107e63cb70016d54def14f70
diff --git a/sl4n/facades/bluetooth/bt_binder_facade.cpp b/sl4n/facades/bluetooth/bt_binder_facade.cpp
index e0088c1..0c9f5fd 100644
--- a/sl4n/facades/bluetooth/bt_binder_facade.cpp
+++ b/sl4n/facades/bluetooth/bt_binder_facade.cpp
@@ -70,7 +70,7 @@
     return std::make_tuple(false, sl4n_error_codes::kFailInt);
   }
   bool ret;
-  bt_iface->Enable(&ret);
+  bt_iface->Enable(false, &ret);
   if (!ret) {
     LOG(ERROR) << sl4n::kTagStr << ": Failed to enable the Bluetooth service";
     return std::make_tuple(false, sl4n_error_codes::kPassInt);