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/Alaska8220.h b/include/configs/Alaska8220.h
index 85b68be..d9c27ef 100644
--- a/include/configs/Alaska8220.h
+++ b/include/configs/Alaska8220.h
@@ -253,7 +253,7 @@
 #define CONFIG_SYS_GBL_DATA_OFFSET	(CONFIG_SYS_INIT_RAM_END - CONFIG_SYS_GBL_DATA_SIZE)
 #define CONFIG_SYS_INIT_SP_OFFSET	CONFIG_SYS_GBL_DATA_OFFSET
 
-#define CONFIG_SYS_MONITOR_BASE	TEXT_BASE
+#define CONFIG_SYS_MONITOR_BASE	CONFIG_SYS_TEXT_BASE
 #if (CONFIG_SYS_MONITOR_BASE < CONFIG_SYS_FLASH_BASE)
 #   define CONFIG_SYS_RAMBOOT		1
 #endif