uboot-imx

sh: Add marubun's pcmcia driver

Marubun pcmcia is a chip for PCMCIA used with SuperH.
Of course, this can be used even by other architectures.
When use this driver, came to be able to use CompactFlash
and Ethernet.

Signed-off-by: Nobuhiro Iwamatsu <iwamatsu@nigauri.org>