board/BuR/tseries: reactivate NAND-board

The NAND-version has been become a bit orphan.
Now we need to reactivate it, so bring necessary things:

- loading devicetree
- switch control signal to correct pins
- setup pinmux
- default-environment

up to date.

Signed-off-by: Hannes Petermaier <oe5hpm@oevsv.at>
diff --git a/board/BuR/tseries/mux.c b/board/BuR/tseries/mux.c
index ac7e885..caedf00 100644
--- a/board/BuR/tseries/mux.c
+++ b/board/BuR/tseries/mux.c
@@ -123,7 +123,7 @@
 	{OFFSET(gpmc_ad5), (MODE(0) | PULLUP_EN | RXACTIVE)},	/* NAND AD5 */
 	{OFFSET(gpmc_ad6), (MODE(0) | PULLUP_EN | RXACTIVE)},	/* NAND AD6 */
 	{OFFSET(gpmc_ad7), (MODE(0) | PULLUP_EN | RXACTIVE)},	/* NAND AD7 */
-	{OFFSET(gpmc_wait0), (MODE(0) | RXACTIVE | PULLUP_EN)},	/* NAND WAIT */
+	{OFFSET(gpmc_clk), (MODE(2) | RXACTIVE | PULLUP_EN)},	/* NAND WAIT */
 	{OFFSET(gpmc_wpn), (MODE(7) | PULLUP_EN | RXACTIVE)},	/* NAND_WPN */
 	{OFFSET(gpmc_csn0), (MODE(0) | PULLUDEN)},	/* NAND_CS0 */
 	{OFFSET(gpmc_advn_ale), (MODE(0) | PULLUDEN)},	/* NAND_ADV_ALE */