wait for device initialisations
workaround for a timing issue during first boot on ath79-generic
after sysupgrade from ar71xx-generic image

GitHub Issue: #2779

Increase the peer limit for ath10k-ct from 32 to 96 STAs like it is set
for the non-ct firmware / driver. In order to make this work with the
memory constraints of the wireless platform, reduce the number of
concurrent vdevs to the maximum Gluon uses (4).

Closes #2604

Signed-off-by: David Bauer <mail@david-bauer.net>

Signed-off-by: David Bauer <mail@david-bauer.net>

net.ipv6.conf.br-client.forwarding is moved from gluon-client-bridge to
gluon-mesh-batman-adv, as the setting is not useful with non-bridged
protocols.

Not useful by itself except for testing; will be used for multi-domain
support.

[Matthias Schiffer: rename script, use for initial configuration]

[Matthias Schiffer: change section name and commit message]

This new feature introduces the new uci section 'gluon-core.wireless' with a preserve_channels option:
 * preserve_channels (boolean)

By setting this option to 1 (true) wifi channels will be preserved during upgrades.

Moving the scripts to a common directory not only vastly simplifies the
zzz-gluon-upgrade script, but also allows to define an ordering of such
scripts across packages.

As the (removed) comment said, this was a one-time-hack that was obsoleted long ago.

As we don't have any older gluon versions so far, and hope to be able to do all
upgrades with invariant scripts, remove the code for now.

If we ever see the need to add such upgrade scripts, we can just re-add this.

This is the most basic core of the Gluon framework. Most upgrade scripts will
have to be rewritten and/or moved to other packages.