Rename CONFIG_SYS_TEXT_BASE to CONFIG_TEXT_BASE

The current name is inconsistent with SPL which uses CONFIG_SPL_TEXT_BASE
and this makes it imposible to use CONFIG_VAL().

Rename it to resolve this problem.

Signed-off-by: Simon Glass <sjg@chromium.org>
diff --git a/include/configs/MCR3000.h b/include/configs/MCR3000.h
index 9d06838..1826a6f 100644
--- a/include/configs/MCR3000.h
+++ b/include/configs/MCR3000.h
@@ -68,7 +68,7 @@
 #define	CONFIG_SYS_SDRAM_BASE		0x00000000
 
 /* FLASH organization */
-#define CONFIG_SYS_FLASH_BASE		CONFIG_SYS_TEXT_BASE
+#define CONFIG_SYS_FLASH_BASE		CONFIG_TEXT_BASE
 
 /*
  * For booting Linux, the board info and command line data