arm, davinci: Add support for the Calimain board from OMICRON electronics

This patch adds support for the Calimain board from
OMICRON electronics GmbH. The board features a Texas Instruments AM1808
SoC, 128 MB DDR2 memory, and 64 MB NOR flash memory connected to CS2 and
CS3.

Signed-off-by: Christian Riesch <christian.riesch@omicron.at>
diff --git a/boards.cfg b/boards.cfg
index 0c39625..bf71a66 100644
--- a/boards.cfg
+++ b/boards.cfg
@@ -135,6 +135,7 @@
 hawkboard                    arm         arm926ejs   da8xxevm            davinci        davinci
 hawkboard_uart               arm         arm926ejs   da8xxevm            davinci        davinci     hawkboard:UART_U_BOOT
 enbw_cmc                     arm         arm926ejs   enbw_cmc            enbw           davinci
+calimain                     arm         arm926ejs   calimain            omicron        davinci
 dns325                       arm         arm926ejs   -                   d-link         kirkwood
 km_kirkwood                  arm         arm926ejs   km_arm              keymile        kirkwood	km_kirkwood:KM_DISABLE_PCI
 km_kirkwood_pci              arm         arm926ejs   km_arm              keymile        kirkwood	km_kirkwood:KM_RECONFIG_XLX