Handle default case of single DDR chip
Propagate global variable for multi DDR chip
Change-Id: I315380f91ee7fcc2976437aa5836d88a7964fc9d
Signed-off-by: Antonio Borneo <borneo.antonio@gmail.com>
Reviewed-on: http://openocd.zylin.com/251
Tested-by: jenkins
Reviewed-by: Spencer Oliver <spen@spen-soft.co.uk>