powerpc: ppc4xx: Add defaults for DT based booting to really work

These additional nodes need to be provided to get U-Boot to boot correctly
on the Canyonlands / Glacier board:

- chosen path to the console-uart
- reg-shift set to 0 in the uart device nodes

Signed-off-by: Stefan Roese <sr@denx.de>
Cc: Simon Glass <sjg@chromium.org>
Reviewed-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Simon Glass <sjg@chromium.org>

arch/powerpc/dts/canyonlands.dts

@@ -22,6 +22,10 @@
 		serial1 = &UART1;
 	};
 
+	chosen {
+		stdout-path = &UART0;
+	};
+
 	cpus {
 		#address-cells = <1>;
 		#size-cells = <0>;
@@ -280,6 +284,7 @@
 
 			UART0: serial@ef600300 {
 				device_type = "serial";
+				reg-shift = <0>;
 				compatible = "ns16550";
 				reg = <0xef600300 0x00000008>;
 				virtual-reg = <0xef600300>;
@@ -291,6 +296,7 @@
 
 			UART1: serial@ef600400 {
 				device_type = "serial";
+				reg-shift = <0>;
 				compatible = "ns16550";
 				reg = <0xef600400 0x00000008>;
 				virtual-reg = <0xef600400>;

arch/powerpc/dts/glacier.dts

@@ -251,6 +251,7 @@
 
 			UART1: serial@ef600400 {
 				device_type = "serial";
+				reg-shift = <0>;
 				compatible = "ns16550";
 				reg = <0xef600400 0x00000008>;
 				virtual-reg = <0xef600400>;
@@ -262,6 +263,7 @@
 
 			UART2: serial@ef600500 {
 				device_type = "serial";
+				reg-shift = <0>;
 				compatible = "ns16550";
 				reg = <0xef600500 0x00000008>;
 				virtual-reg = <0xef600500>;
@@ -273,6 +275,7 @@
 
 			UART3: serial@ef600600 {
 				device_type = "serial";
+				reg-shift = <0>;
 				compatible = "ns16550";
 				reg = <0xef600600 0x00000008>;
 				virtual-reg = <0xef600600>;