ath79: fix OCEDO Raccoon

The OCEDO Raccoon only has one ethernet port, but currently uci sections
for WAN and LAN are created.

Additionally, newer versions of the devices U-Boot (units with SteelWRT)
set the kernel-cmdline and therefore overwrite the partition-layout.
We fix this by overwriting the cmdline supplied by the bootloader.

Signed-off-by: David Bauer <mail@david-bauer.net>

target/linux/ath79/dts/ar9344_ocedo_raccoon.dts

@@ -10,6 +10,10 @@
 	model = "OCEDO Raccoon";
 	compatible = "ocedo,raccoon", "qca,ar9344";
 
+	chosen {
+		bootargs = "console=ttyS0,115200n8";
+	};
+
 	aliases {
 		led-status = &system;
 	};