Patch from Alessandro Zummo

This patch adds a few defines that are useful
to configure the CS regions on ixp4xx.
Signed-off-by: NAlessandro Zummo <a.zummo@towertech.it>
Signed-off-by: NOEyvind Repvik <oyvind@repvik.org>
Signed-off-by: NDeepak Saxena <dsaxena@plexity.net>
Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>