This reverts the usage of the S-Tag for separating LAN and WAN port on
the embedded switch. Many users complained about not being able to
manage C-Tag addition / removal on the switch as well as degraded
performance.
Fixes: commit 9da2b567605b ("ipq40xx: fix ethernet vlan double tagging")
Signed-off-by: David Bauer <mail@david-bauer.net>
Signed-off-by: maurerr <mariusd84@gmail.com>