ath79: rename DTSI for Netgear WNDR devices based on ar7161

This renames the DTSI for Netgear WNDR devices based on ar7161 to
indicate that the file is not limited to WNDR3700 models.

Signed-off-by: Adrian Schmutzler <freifunk@adrianschmutzler.de>

target/linux/ath79/dts/ar7161_netgear_wndr3700-v2.dts

@@ -1,7 +1,7 @@
 // SPDX-License-Identifier: GPL-2.0-or-later OR MIT
 /dts-v1/;
 
-#include "ar7161_netgear_wndr3700.dtsi"
+#include "ar7161_netgear_wndr.dtsi"
 
 / {
 	compatible = "netgear,wndr3700-v2", "qca,ar7161";

target/linux/ath79/dts/ar7161_netgear_wndr3700.dts

@@ -1,7 +1,7 @@
 // SPDX-License-Identifier: GPL-2.0-or-later OR MIT
 /dts-v1/;
 
-#include "ar7161_netgear_wndr3700.dtsi"
+#include "ar7161_netgear_wndr.dtsi"
 
 / {
 	compatible = "netgear,wndr3700", "qca,ar7161";

target/linux/ath79/dts/ar7161_netgear_wndr3800.dts

@@ -1,7 +1,7 @@
 // SPDX-License-Identifier: GPL-2.0-or-later OR MIT
 /dts-v1/;
 
-#include "ar7161_netgear_wndr3700.dtsi"
+#include "ar7161_netgear_wndr.dtsi"
 
 / {
 	compatible = "netgear,wndr3800", "qca,ar7161";

target/linux/ath79/dts/ar7161_netgear_wndr3800ch.dts

@@ -1,7 +1,7 @@
 // SPDX-License-Identifier: GPL-2.0-or-later OR MIT
 /dts-v1/;
 
-#include "ar7161_netgear_wndr3700.dtsi"
+#include "ar7161_netgear_wndr.dtsi"
 
 / {
 	compatible = "netgear,wndr3800ch", "qca,ar7161";