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/CU824.h b/include/configs/CU824.h
index 4a3f2bc..e093120 100644
--- a/include/configs/CU824.h
+++ b/include/configs/CU824.h
@@ -114,7 +114,7 @@
 
 #define CONFIG_SYS_EUMB_ADDR	    0xFCE00000
 
-#define CONFIG_SYS_MONITOR_BASE    TEXT_BASE
+#define CONFIG_SYS_MONITOR_BASE    CONFIG_SYS_TEXT_BASE
 
 #define CONFIG_SYS_MONITOR_LEN	    (256 << 10) /* Reserve 256 kB for Monitor	*/
 #define CONFIG_SYS_MALLOC_LEN	    (128 << 10) /* Reserve 128 kB for malloc()	*/