This adds support for the SHMIN SH7706 board(T-SH7706LAN).
The CPU of this board is SH7706.
There are SDRAM of 32M byte, Flash memory of 512K byte, Serial,
10Base Ether and MMC.
http://web.kyoto-inet.or.jp/people/takagaki/T-SH7706/T-SH7706.htm
Signed-off-by: Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
