dm355 evm support

Initial U-Boot support for the DaVinci DM355 EVM.  This is a board
from Spectrum Digital.  Board docs include schematic and firmware
for its microcontroller:

  http://c6000.spectrumdigital.com/evmdm355/revd/

Most of the DM355 chip is fully documented by TI, the most notable
exception being the MPEG/JPEG coprocessor (programmable using codecs
available at no cost from TI), which is omitted from its DM335 sibling:

  http://focus.ti.com/docs/prod/folders/print/tms320dm355.html

This version can boot from the on-board DM9000 Ethernet chip, after
being loaded (from NAND, MMC/SD, or UART).  In the near future, NAND
and USB support could be added ... NAND support is being held back
until the support for the 4-bit ECC hardware is ready.

Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
diff --git a/Makefile b/Makefile
index cf140a4..d146780 100644
--- a/Makefile
+++ b/Makefile
@@ -2801,6 +2801,9 @@
 davinci_sonata_config :	unconfig
 	@$(MKCONFIG) $(@:_config=) arm arm926ejs sonata davinci davinci
 
+davinci_dm355evm_config :	unconfig
+	@$(MKCONFIG) $(@:_config=) arm arm926ejs dm355evm davinci davinci
+
 lpd7a400_config \
 lpd7a404_config:	unconfig
 	@$(MKCONFIG) $(@:_config=) arm lh7a40x lpd7a40x