This was broken in 7bab49fd ("lantiq: add compatible strings to dts
files"), causing for the dm200 garbled serial output during boot, and
likely other issues.
Signed-off-by: Thomas Nixon <tom@tomn.co.uk>
[fix the compat string of the P2601HNFX as well]
Signed-off-by: Mathias Kresin <dev@kresin.me>