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/ti_armv7_common.h b/include/configs/ti_armv7_common.h
index 2d1f037..05536c3 100644
--- a/include/configs/ti_armv7_common.h
+++ b/include/configs/ti_armv7_common.h
@@ -123,7 +123,7 @@
 /* General parts of the framework, required. */
 
 #ifdef CONFIG_MTD_RAW_NAND
-#define CONFIG_SYS_NAND_U_BOOT_START	CONFIG_SYS_TEXT_BASE
+#define CONFIG_SYS_NAND_U_BOOT_START	CONFIG_TEXT_BASE
 #endif
 #endif /* !CONFIG_NOR_BOOT */