stm32_firewall_populate_bus
ret = stm32_firewall_populate_bus(dbg_controller);
rc = stm32_firewall_populate_bus(etzpc_controller);
EXPORT_SYMBOL_GPL(stm32_firewall_populate_bus);
rc = stm32_firewall_populate_bus(rifsc_controller);
int stm32_firewall_populate_bus(struct stm32_firewall_controller *firewall_controller);