ti: drop value from CONFIG_SYS_NAND_BUSWIDTH_16BIT

Signed-off-by: Stefano Babic <sbabic@denx.de>
Reviewed-by: Tom Rini <trini@konsulko.com>
diff --git a/include/configs/dig297.h b/include/configs/dig297.h
index f6d7ec4..2e16ca7 100644
--- a/include/configs/dig297.h
+++ b/include/configs/dig297.h
@@ -132,7 +132,7 @@
  * Board NAND Info.
  */
 #define CONFIG_NAND_OMAP_GPMC
-#define CONFIG_SYS_NAND_BUSWIDTH_16BIT	16
+#define CONFIG_SYS_NAND_BUSWIDTH_16BIT
 #define CONFIG_SYS_NAND_ADDR		NAND_BASE	/* physical address */
 							/* to access nand */
 #define CONFIG_SYS_NAND_BASE		NAND_BASE	/* physical address */