siemens,am33x: add draco etamin board

In the draco CPU board family, etamin is a new variant
with bigger flash and more RAM. Due to new flash that
uses larger pages (4K) some changes are necessary because
it impacts the MTD partition layout and the ubi mount
parameters.

Signed-off-by: Samuel Egli <samuel.egli@siemens.com>
Signed-off-by: Heiko Schocher <hs@denx.de>
[trini: Move BOOTDELAY into defconfig, just always be 3 now]
Signed-off-by: Tom Rini <trini@konsulko.com>
diff --git a/board/siemens/draco/mux.c b/board/siemens/draco/mux.c
index dbcc80b..38a484e 100644
--- a/board/siemens/draco/mux.c
+++ b/board/siemens/draco/mux.c
@@ -51,6 +51,7 @@
 	{OFFSET(gpmc_wait0), (MODE(0) | 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_csn1), MODE(0) | PULLUDEN | PULLUP_EN},    /* NAND_CS1 */
 	{OFFSET(gpmc_advn_ale), (MODE(0) | PULLUDEN)}, /* NAND_ADV_ALE */
 	{OFFSET(gpmc_oen_ren), (MODE(0) | PULLUDEN)},	/* NAND_OE */
 	{OFFSET(gpmc_wen), (MODE(0) | PULLUDEN)},	/* NAND_WEN */
@@ -68,7 +69,6 @@
 	{OFFSET(mmc0_dat1), MODE(7) | PULLUDDIS | RXACTIVE},	/* Y3 GPIO2_28*/
 	{OFFSET(mmc0_dat2), MODE(7) | PULLUDDIS | RXACTIVE},	/* Y7 GPIO2_27*/
 	/* Triacs initial HW Rev */
-	{OFFSET(gpmc_csn1), MODE(7) | RXACTIVE | PULLUDDIS},	/* 1_30 Y0 */
 	{OFFSET(gpmc_be1n), MODE(7) | RXACTIVE | PULLUDDIS},	/* 1_28 Y1 */
 	{OFFSET(gpmc_csn2), MODE(7) | RXACTIVE | PULLUDDIS},	/* 1_31 Y2 */
 	{OFFSET(lcd_data15), MODE(7) | RXACTIVE | PULLUDDIS},	/* 0_11 Y3 */