CONFIG_UART1_CONSOLE added.

README

@@ -470,6 +470,13 @@ The following options need to be configured:
 		Set to 0 to disable this feature (this is the default).
 		This will also disable hardware handshake.
 
+- Console UART Number:
+		CONFIG_UART1_CONSOLE
+
+		IBM PPC4xx only.
+		If defined internal UART1 (and not UART0) is used
+		as default U-Boot console.
+
 - Boot Delay:	CONFIG_BOOTDELAY - in seconds
 		Delay before automatically booting the default image;
 		set to -1 to disable autoboot.