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/xilinx-ppc.h b/include/configs/xilinx-ppc.h
index 6efe342..b4a9675 100644
--- a/include/configs/xilinx-ppc.h
+++ b/include/configs/xilinx-ppc.h
@@ -28,7 +28,7 @@
 
 /*Mem Map*/
 #define CONFIG_SYS_SDRAM_BASE		0x0
-#define CONFIG_SYS_MONITOR_BASE	TEXT_BASE
+#define CONFIG_SYS_MONITOR_BASE	CONFIG_SYS_TEXT_BASE
 #define CONFIG_SYS_MONITOR_LEN		(192 * 1024)
 #define CONFIG_SYS_MALLOC_LEN		(CONFIG_ENV_SIZE + 128 * 1024)