Adds basic support for Embedded Artists' LPC4357 Developer's Kit. Board
features a LPC4357 Soc, 32 MB SDRAM, 128 MB NAND Flash, 16 MB SPI
Flash, USB and Ethernet.

More information can be found on:
http://www.embeddedartists.com/products/kits/lpc4357_kit.phpSigned-off-by: NJoachim Eastwood <manabian@gmail.com>
Signed-off-by: NArnd Bergmann <arnd@arndb.de>