It is not necessary to have a private LAG id allocation when the shared DSA
code already provides the complete infrastructure for it.
Signed-off-by: Sven Eckelmann <se@simonwunderlich.de>
Link: https://github.com/openwrt/openwrt/pull/20707
Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>