atngw100mkii: add missing CONFIG_SYS_TEXT_BASE

Signed-off-by: Andreas Bießmann <andreas.devel@googlemail.com>
Cc: Masahiro Yamada <yamada.m@jp.panasonic.com>
diff --git a/include/configs/atngw100mkii.h b/include/configs/atngw100mkii.h
index 066d09a..7b4f9cf 100644
--- a/include/configs/atngw100mkii.h
+++ b/include/configs/atngw100mkii.h
@@ -151,6 +151,7 @@
 #define CONFIG_SYS_MAX_FLASH_SECT	135
 
 #define CONFIG_SYS_MONITOR_BASE		CONFIG_SYS_FLASH_BASE
+#define CONFIG_SYS_TEXT_BASE		0x00000000
 
 #define CONFIG_SYS_INTRAM_BASE		INTERNAL_SRAM_BASE
 #define CONFIG_SYS_INTRAM_SIZE		INTERNAL_SRAM_SIZE