ARM: BCM5301X: Enable earlycon on tested devices

This allows reporting & debugging problems occurring early in the boot
process.
Signed-off-by: NRafał Miłecki <zajec5@gmail.com>
Acked-by: NHauke Mehrtens <hauke@hauke-m.de>
Signed-off-by: NFlorian Fainelli <f.fainelli@gmail.com>

arch/arm/boot/dts/bcm4708-buffalo-wzr-1750dhp.dts

@@ -17,7 +17,7 @@
 	model = "Buffalo WZR-1750DHP (BCM4708)";
 
 	chosen {
-		bootargs = "console=ttyS0,115200";
+		bootargs = "console=ttyS0,115200 earlycon";
 	};
 
 	memory {

arch/arm/boot/dts/bcm4708-luxul-xwc-1000.dts

@@ -17,7 +17,7 @@
 	model = "Luxul XWC-1000 (BCM4708)";
 
 	chosen {
-		bootargs = "console=ttyS0,115200";
+		bootargs = "console=ttyS0,115200 earlycon";
 	};
 
 	memory {

arch/arm/boot/dts/bcm4708-netgear-r6250.dts

@@ -17,7 +17,7 @@
 	model = "Netgear R6250 V1 (BCM4708)";
 
 	chosen {
-		bootargs = "console=ttyS0,115200";
+		bootargs = "console=ttyS0,115200 earlycon";
 	};
 
 	memory {

arch/arm/boot/dts/bcm4708-smartrg-sr400ac.dts

@@ -17,7 +17,7 @@
 	model = "SmartRG SR400ac";
 
 	chosen {
-		bootargs = "console=ttyS0,115200";
+		bootargs = "console=ttyS0,115200 earlycon";
 	};
 
 	memory {

arch/arm/boot/dts/bcm47081-buffalo-wzr-600dhp2.dts

@@ -17,7 +17,7 @@
 	model = "Buffalo WZR-600DHP2 (BCM47081)";
 
 	chosen {
-		bootargs = "console=ttyS0,115200";
+		bootargs = "console=ttyS0,115200 earlycon";
 	};
 
 	memory {

arch/arm/boot/dts/bcm47094-dlink-dir-885l.dts

@@ -17,7 +17,7 @@
 	model = "D-Link DIR-885L";
 
 	chosen {
-		bootargs = "console=ttyS0,115200";
+		bootargs = "console=ttyS0,115200 earlycon";
 	};
 
 	memory {

arch/arm/boot/dts/bcm5301x.dtsi

@@ -18,6 +18,10 @@
 / {
 	interrupt-parent = <&gic>;
 
+	chosen {
+		stdout-path = &uart0;
+	};
+
 	chipcommonA {
 		compatible = "simple-bus";
 		ranges = <0x00000000 0x18000000 0x00001000>;