ARM: dts: move aliases back to .dts in Cygnus

Move aliases from bcm-cygnus.dtsi back to individual .dts files. Also
clean up the chosen node to have the stdout-path using the proper alias

Signed-off-by: Ray Jui <rjui@broadcom.com>
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>

arch/arm/boot/dts/bcm911360k.dts

@@ -38,9 +38,12 @@
 	model = "Cygnus SVK (BCM911360K)";
 	compatible = "brcm,bcm11360", "brcm,cygnus";
 
+	aliases {
+		serial0 = &uart3;
+	};
+
 	chosen {
-		stdout-path = &uart3;
-		bootargs = "console=ttyS0,115200";
+		stdout-path = "serial0:115200n8";
 	};
 };