`CONFIG_NET_L2_BT` no longer forces required BT configuration, but
depends on a user to set a valid configuration instead. Hence, we
need to select a proper configuration in the overlay config file.
Signed-off-by: Robert Lubos <robert.lubos@nordicsemi.no>
Remove adhoc handling of BLE connection setup, rely on net_config for
that. Remove board-specific configs, instead have prt.conf and overlay
configs. Perform TLS setup once before main loop, to avoid errors.
Signed-off-by: Tavish Naruka <tavishnaruka@gmail.com>
Robert Lubos