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/spc1920.h b/include/configs/spc1920.h
index 1fe2a04..f81165b 100644
--- a/include/configs/spc1920.h
+++ b/include/configs/spc1920.h
@@ -161,7 +161,7 @@
  */
 #define	CONFIG_SYS_BOOTMAPSZ		(8 << 20)	/* Initial Memory map for Linux	*/
 
-#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	*/
 
 #ifdef CONFIG_BZIP2