lantiq: adapt upstream commit to some dts files

lantiq: adapt upstream commit to some dts files

Some lantiq dts files still use etop but 6.12.45[1] changed to ethernet
so bring them into parity with this change.

1. https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?h=linux-6.12.y&id=8c431ea8f3f795c4b9cfa57a85bc4166b9cce0ac

Co-Authored-by: Hauke Mehrtens <hauke@hauke-m.de>
Co-Authored-by: Aleksander Bajkowski <olek2@wp.pl>
Signed-off-by: John Audia <therealgraysky@proton.me>
Link: https://github.com/openwrt/openwrt/pull/19956
Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
(cherry picked from commit c55a411af2f2443e3face3f895d2c0a2f0bfc135)