SH7780 is CPU of Renesas Technology.
This CPU has
 - CPU clock 400MHz
 - PCI support
 - DDR-SDRAM controller
 - etc ...

Signed-off-by: Yusuke Goda <goda.yusuke@renesas.com>
Signed-off-by: Nobuhiro Iwamatsu <iwamatsu@nigauri.org>