- Disable interface-level bridging if a corresponding br-$name bridge
already exists as device declaration
- Exempt wireless interfaces from bridge port configuration, they can only
be attached indirectly through "option network"
- Consider bridge ports from both "option ifname" in interface/device
sections and from "option ports" in bridge-vlan ones
- Small fixes for rendering quirks
Signed-off-by: Jo-Philipp Wich <jo@mein.io>
