toradex: configblock: generic wi-fi/bt handling

Make the interactive Wi-Fi/BT handling generic by pulling it out of the
Colibri iMX6ULL interactive part to be re-used for Apalis iMX8 and
Colibri iMX8X.

Signed-off-by: Marcel Ziswiler <marcel.ziswiler@toradex.com>
Reviewed-by: Igor Opaniuk <igor.opaniuk@toradex.com>
Reviewed-by: Oleksandr Suvorov <oleksandr.suvorov@toradex.com>