Rename TEXT_BASE into CONFIG_SYS_TEXT_BASE

The change is currently needed to be able to remove the board
configuration scripting from the top level Makefile and replace it by
a simple, table driven script.

Moving this configuration setting into the "CONFIG_*" name space is
also desirable because it is needed if we ever should move forward to
a Kconfig driven configuration system.

Signed-off-by: Wolfgang Denk <wd@denx.de>
diff --git a/include/configs/VoVPN-GW.h b/include/configs/VoVPN-GW.h
index 3614184..8f8b55e 100644
--- a/include/configs/VoVPN-GW.h
+++ b/include/configs/VoVPN-GW.h
@@ -308,7 +308,7 @@
  */
 #define CONFIG_SYS_SDRAM_BASE			0x00000000
 #define CONFIG_SYS_SDRAM_SIZE			(32*1024*1024)
-#define CONFIG_SYS_MONITOR_BASE		TEXT_BASE
+#define CONFIG_SYS_MONITOR_BASE		CONFIG_SYS_TEXT_BASE
 #define CONFIG_SYS_MONITOR_FLASH		(CONFIG_SYS_FLASH_BASE + CONFIG_SYS_MONITOR_OFFSET)
 #define CONFIG_SYS_MONITOR_LEN			0x00020000
 #define CONFIG_SYS_MALLOC_LEN			0x00020000