board/BuR/common: Introduce Network Console and common environment for it

It is often necessary to "break in" into boards bootloader commandline if
something fails or even for development purposes some parameters have to be
changed.

So we enable u-boot's CONFIG_NETCONSOLE feature.
We also modify Networksettings to apply with this new use-case.

Signed-off-by: Hannes Petermaier <oe5hpm@oevsv.at>
diff --git a/include/configs/tseries.h b/include/configs/tseries.h
index 986db3f..8e073e0 100644
--- a/include/configs/tseries.h
+++ b/include/configs/tseries.h
@@ -125,35 +125,10 @@
 
 #ifndef CONFIG_SPL_BUILD
 #define CONFIG_EXTRA_ENV_SETTINGS \
-	"autoload=0\0" \
-	"loadaddr=0x80200000\0" \
-	"bootfile=zImage\0" \
-	"console=ttyO0,115200n8\0" \
-	"optargs=\0" \
-	"rootpath=/tftpboot/tseries/rootfs-small\0" \
-	"nfsopts=nolock\0" \
-	"netargs=setenv bootargs console=${console} " \
-		"${optargs} " \
-		"root=/dev/nfs " \
-		"nfsroot=${serverip}:${rootpath},${nfsopts} rw " \
-		"ip=dhcp\0" \
-	"netboot=echo Booting from network ...; " \
-		"setenv autoload no; " \
-		"dhcp; " \
-		"tftp ${loadaddr} ${bootfile}; " \
-		"run netargs; " \
-		"bootm ${loadaddr}\0" \
-	"usbupdate=echo Updating UBOOT from USB-Stick ...; " \
-		"usb start; " \
-		"fatload usb 0 0x80000000 updateubootusb.img; " \
-		"source;\0" \
-	"netupdate=echo Updating UBOOT from Network (TFTP) ...; " \
-		"setenv autoload 0; " \
-		"dhcp;" \
-		"tftp 0x80000000 updateUBOOT.img;" \
-		"source;\0" \
-	NANDARGS \
-	MMCARGS
+BUR_COMMON_ENV \
+"autoload=0\0" \
+NANDARGS \
+MMCARGS
 #endif /* !CONFIG_SPL_BUILD*/
 
 #define CONFIG_BOOTCOMMAND \