mips: dbau1x00: move CONFIG_SYS_TEXT_BASE away from config.mk

We can delete board/dbau1x00/config.mk by moving the define of
CONFIG_SYS_TEXT_BASE to somewhere else.  Other MIPS boards are
still defining it in include/config/${BOARD}.h, so I am following
that way here.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Acked-by: Daniel Schwierzeck <daniel.schwierzeck@gmail.com>
diff --git a/include/configs/dbau1x00.h b/include/configs/dbau1x00.h
index 3be44d4..817676f 100644
--- a/include/configs/dbau1x00.h
+++ b/include/configs/dbau1x00.h
@@ -147,6 +147,11 @@
 #define CONFIG_FLASH_CFI_DRIVER    1
 
 /* The following #defines are needed to get flash environment right */
+/* ROM version */
+#define CONFIG_SYS_TEXT_BASE		0xbfc00000
+/* RAM version */
+/* #define CONFIG_SYS_TEXT_BASE		0x80100000 */
+
 #define	CONFIG_SYS_MONITOR_BASE	CONFIG_SYS_TEXT_BASE
 #define	CONFIG_SYS_MONITOR_LEN		(192 << 10)