lantiq: ARV7519RW22: several fixes

- Fix ethernet ports.
- Clean DTS files.
- WiFi is lantiq based (not supported yet), remove ath9k.

Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@40519 3c298f89-4303-0410-b956-a3cf2f4a3e73
uboot-lantiq: backport lzma fix

Signed-off-by: John Crispin <blogic@openwrt.org>

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@40520 3c298f89-4303-0410-b956-a3cf2f4a3e73
lantiq: remove uboot lzma patch, apparently its not needed after all

Signed-off-by: John Crispin <blogic@openwrt.org>

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@40521 3c298f89-4303-0410-b956-a3cf2f4a3e73