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 <[email protected]>
Co-Authored-by: Aleksander Bajkowski <[email protected]>
Signed-off-by: John Audia <[email protected]>
Link: https://github.com/openwrt/openwrt/pull/19956
Signed-off-by: Hauke Mehrtens <[email protected]>