arm, da850: add ipam390 board support

add the am1808 based ipam390 board from Barix.

- 128MByte, DDR2, synchronous RAM 16bit databus to SDRAM
  interface
- 128MByte, NAND Flash, 8bit databus to the NANDFlash
  Interface
- Ethernet PHY Micrel KSZ8051R via RMII
- Console on UART 0
- booting fron nand flash
- spl falcon bootmode

Signed-off-by: Heiko Schocher <hs@denx.de>
Cc: Tom Rini <trini@ti.com>
diff --git a/boards.cfg b/boards.cfg
index 8d86a1b..60ecb31 100644
--- a/boards.cfg
+++ b/boards.cfg
@@ -140,6 +140,7 @@
 portuxg20                    arm         arm926ejs   stamp9g20           taskit         at91        stamp9g20:AT91SAM9G20,PORTUXG20
 stamp9g20                    arm         arm926ejs   stamp9g20           taskit         at91        stamp9g20:AT91SAM9G20
 cam_enc_4xx                  arm         arm926ejs   cam_enc_4xx         ait            davinci     cam_enc_4xx
+ipam390                      arm         arm926ejs   ipam390             Barix          davinci
 da830evm                     arm         arm926ejs   da8xxevm            davinci        davinci
 da850_am18xxevm              arm         arm926ejs   da8xxevm            davinci        davinci     da850evm:DA850_AM18X_EVM,MAC_ADDR_IN_EEPROM,SYS_I2C_EEPROM_ADDR_LEN=2,SYS_I2C_EEPROM_ADDR=0x50
 da850evm                     arm         arm926ejs   da8xxevm            davinci        davinci     da850evm:MAC_ADDR_IN_SPIFLASH