[oe] RFC: auto eth0 and auto eth1 in netbase

[Rod Whitby]

Chris Larson wrote:
> Afaik, the execution of the hotplug/coldplug scripts on startup should
> generate the hotplug events for the ethernet interfaces and bring them
> up that way.  In debian, the hotplug scripts bring them up with ifup
> --allow=hotplug [iface], such that you need an 'allow-hotplug eth0' in
> interfaces to have them brought up that way.  I'm too rusty with OE to
> say how we do it today, but it's not likely that auto is needed.

Unfortunately, the busybox ifup applet does not support the
allow-hotplug keyword.

Based on the feedback, I'll add 'auto eth0'.

-- Rod