net: dsa: lantiq_gswip: Don't manually call gswip_port_enable()

We don't need to manually call gswip_port_enable() from within
gswip_setup() for the CPU port. DSA does this automatically for us.

Signed-off-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Acked-by: Hauke Mehrtens <hauke@hauke-m.de>
Reviewed-by: Vladimir Oltean <olteanv@gmail.com>
Signed-off-by: Martin Schiller <ms@dev.tdt.de>
Link: https://lore.kernel.org/r/20240611135434.3180973-6-ms@dev.tdt.de


Signed-off-by: Jakub Kicinski <kuba@kernel.org>