ARM: shmobile: porter dts: Add serial port config to chosen/stdout-path

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>

arch/arm/boot/dts/r8a7791-porter.dts

@@ -22,7 +22,7 @@ aliases {
 
 	chosen {
 		bootargs = "ignore_loglevel rw root=/dev/nfs ip=dhcp";
-		stdout-path = &scif0;
+		stdout-path = "serial0:115200n8";
 	};
 
 	memory@40000000 {