ARM: dts: vf-colibri: define stdout-path property

Define Vybrid's UART0, connected to the Colibri pinout UART_A, as
standard output.
Signed-off-by: Stefan Agner <stefan@agner.ch>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>

arch/arm/boot/dts/vf-colibri-eval-v3.dtsi

@@ -9,7 +9,7 @@
 
 / {
 	chosen {
-		bootargs = "console=ttyLP0,115200";
+		stdout-path = "serial0:115200n8";
 	};
 
 	clk16m: clk16m {