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/mpc7448hpc2.h b/include/configs/mpc7448hpc2.h
index 497ea42..8068b40 100644
--- a/include/configs/mpc7448hpc2.h
+++ b/include/configs/mpc7448hpc2.h
@@ -251,7 +251,7 @@
 
 #define CONFIG_SYS_RESET_ADDRESS	0x3fffff00
 #define CONFIG_SYS_MONITOR_LEN		(256 << 10)	/* Reserve 256 kB for Monitor */
-#define CONFIG_SYS_MONITOR_BASE	TEXT_BASE	/* u-boot code base */
+#define CONFIG_SYS_MONITOR_BASE	CONFIG_SYS_TEXT_BASE	/* u-boot code base */
 #define CONFIG_SYS_MALLOC_LEN		(256 << 10)	/* Reserve 256 kB for malloc */
 
 /* Peripheral Device section */