Adapt the preinit_config_board() to the board.json network changes. It now looks for the device and the ports variables to configure the LAN network. This works with swconfig configurations. Fixes: FS#3866 Fixes:d42640e389("base-files: use "ports" array in board.json network for bridges") Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de> Reviewed-by: Rafał Miłecki <rafal@milecki.pl> (cherry picked from commit467cd378db)