IPQ40XX: Introduce Kernel Flag

[Andreas Oberritter]

Hi Nick,

On Fri, 27 Nov 2020 09:43:58 +0100
Nick <vincent at systemli.org> wrote:

> The current ipq40xx network stack does no longer work for a few targets:
> - Zyxel
> - Fritz!Box 4040
> - Fritz!Box 7530
> - ZyXEL NBG6617
> - GL-B1300
> - ...
> 
> Can we please finally add my PR? I introduced a kernel flag that is 
> about switching between the different options
> 1. Port Isolation
> 2. Nested VLANs
> ith this I hope to satisfy both sides.
> 
> Here is the PR:
> https://github.com/openwrt/openwrt/pull/3596

if this is a device specific setting, wouldn't it be better to use a DT property instead of adding a new compile-time switch?

Best regards,
Andreas