toradex: configblock: fix apalis imx8 target

The Apalis iMX8 was missing the interactive part should a customer have
bricked his module and want to re-create the configuration block. Fix
this.

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>