lantiq: fix dts compatible string

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>

target/linux/lantiq/dts/DM200.dts

@@ -5,7 +5,7 @@
 #include <dt-bindings/input/input.h>
 
 / {
-	compatible = "netgear,dm200", "lantiq,xway", "lantiq,ar9";
+	compatible = "netgear,dm200", "lantiq,xway", "lantiq,vr9";
 	model = "Netgear DM200";
 
 	chosen {

target/linux/lantiq/dts/P2601HNFX.dts

@@ -5,7 +5,7 @@
 #include <dt-bindings/input/input.h>
 
 / {
-	compatible = "zyxel,p-2601hn", "lantiq,xway", "lantiq,danube";
+	compatible = "zyxel,p-2601hn", "lantiq,xway", "lantiq,ar9";
 	model = "ZyXEL P-2601HN-Fx";
 
 	chosen {