arm: rmobile: Add supoprt for KMC KZM-A9-GT board

The KZM-A9-GT board has Renesas R-Mobile SH73A0, 512MB DDR2-SDRAM,
USB, Ethernet, and more.

This patch supports the following functions:
	- 512MB DDR2-SDRAM
	- 16MB NOR Flash memory
	- Serial console (SCIF)
	- Ethernet (SMSC)
	- I2C

Signed-off-by: Nobuhiro Iwamatsu <nobuhiro.iwamatsu.yj@renesas.com>
Signed-off-by: Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
diff --git a/boards.cfg b/boards.cfg
index f789539..9599f8e 100644
--- a/boards.cfg
+++ b/boards.cfg
@@ -272,6 +272,7 @@
 whistler                     arm         armv7:arm720t whistler          nvidia         tegra20
 u8500_href                   arm         armv7       u8500               st-ericsson    u8500
 snowball                     arm         armv7       snowball               st-ericsson    u8500
+kzm9g                        arm         armv7       kzm9g               kmc            rmobile
 actux1_4_16                  arm         ixp         actux1              -              -           actux1:FLASH2X2
 actux1_4_32                  arm         ixp         actux1              -              -           actux1:FLASH2X2,RAM_32MB
 actux1_8_16                  arm         ixp         actux1              -              -           actux1:FLASH1X8