Davinci: Configurable NAND chip selects

Davinci: Configurable NAND chip selects

Add a CONFIG_SYS_NAND_CS setting to all davinci configs and
use it to setup the NAND controller in the davinci_nand
mtd driver.

Signed-off-by: Nick Thompson <nick.thompson@gefanuc.com>
diff --git a/include/configs/davinci_dm6467evm.h b/include/configs/davinci_dm6467evm.h
index ce2d7c4..ddc5990 100644
--- a/include/configs/davinci_dm6467evm.h
+++ b/include/configs/davinci_dm6467evm.h
@@ -75,6 +75,7 @@
 #define CONFIG_SYS_NO_FLASH
 #ifdef CONFIG_SYS_USE_NAND
 #define CONFIG_NAND_DAVINCI
+#define CONFIG_SYS_NAND_CS		2
 #undef CONFIG_ENV_IS_IN_FLASH
 #define CONFIG_ENV_IS_IN_NAND
 #define CONFIG_ENV_SIZE			(16 << 10)	/* 16 KiB */