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>
6 files changed