arm/km: add kmcoge5un board support

For u-boot this board is similar to mgcoge3un. But some differences
are present. We have a different SDRAM on it and therefore a new
SDRAM config file. Additionaly this board has a direct MAC/MAC
connection from the kirkwood to a marvell simple switch without a
phy inbetween, this needs a new configuration for the mvgbe driver.

Signed-off-by: Holger Brunck <holger.brunck@keymile.com>
Signed-off-by: Valentin Longchamp <valentin.longchamp@keymile.com>
cc: Gerlando Falauto <gerlando.falauto@keymile.com>
cc: Prafulla Wadaskar <prafulla@marvell.com>
diff --git a/boards.cfg b/boards.cfg
index 64b5dbc..808f85b 100644
--- a/boards.cfg
+++ b/boards.cfg
@@ -144,6 +144,7 @@
 km_kirkwood_pci              arm         arm926ejs   km_arm              keymile        kirkwood    km_kirkwood:KM_KIRKWOOD_PCI,KM_RECONFIG_XLX
 kmnusa                       arm         arm926ejs   km_arm              keymile        kirkwood    km_kirkwood:KM_NUSA
 mgcoge3un                    arm         arm926ejs   km_arm              keymile        kirkwood
+kmcoge5un                    arm         arm926ejs   km_arm              keymile        kirkwood    km_kirkwood:KM_COGE5UN
 portl2                       arm         arm926ejs   km_arm              keymile        kirkwood
 inetspace_v2                 arm         arm926ejs   netspace_v2         LaCie          kirkwood	lacie_kw:INETSPACE_V2
 net2big_v2                   arm         arm926ejs   net2big_v2          LaCie          kirkwood	lacie_kw:NET2BIG_V2