ipq807x: fix edgecore EAP102 lan/wan

ipq807x: fix edgecore EAP102 lan/wan

We have a report in the forum, that lan/wan is non-functional
on the EAP102 (https://forum.openwrt.org/t/edgecore-eap102/178449)

Fixing that by swapping label and phy-handle of the dp-nodes and
updating the lan/wan bmp.

Note: the original commiter of the device support seems absent for a
long time in the forum and on the OpenWrt github group.

Tested-by: Antonio Della Selva <antonio.dellaselva@uniurb.it>
Signed-off-by: Dirk Buchwalder <buchwalder@posteo.de>
Reviewed-by: Robert Marko <robimarko@gmail.com>