S25FL256S device tested on mbest LPC4357 EVM, S25S128S untested but
from the same data sheet.
Change-Id: Idf58416aab08671fe29d22c3c34c2118b25a9d45
Signed-off-by: Steve Moorby <steve.moorby60@gmail.com>
Reviewed-on: http://openocd.zylin.com/1844
Tested-by: jenkins
Reviewed-by: Andreas Fritiofson <andreas.fritiofson@gmail.com>