kernel/modules: prevent bonding driver to create default bond0 interface

kernel/modules: prevent bonding driver to create default bond0 interface

When loading the bonding driver, bonding interface are automatically
created on bonding module load.

> ip a s bond0
> 14: bond0: <BROADCAST,MULTICAST,MASTER> mtu 1500 qdisc noop state DOWN
> group default qlen 1000
>    link/ether a6:f2:20:64:c1:b9 brd ff:ff:ff:ff:ff:ff

This is not necessary in openwrt as we do not use this created interface.
The netifd creates a bonding interface based on its network configuration
name and configures this over the netifd bonding proto handler.

In order to keep the overview of the interfaces clear, bonding
interfaces should not be created automatically when loading this module,
because they are not used anyway.

Signed-off-by: Florian Eckert <fe@dev.tdt.de>