CONFIG_NO_IOPORT is not available for thedefaultarchitecture x86.
Result is shown for architecture s390

CONFIG_NO_IOPORT (not configurable)

configname: CONFIG_NO_IOPORT

Linux Kernel Configuration
└─>NO_IOPORT
In linux kernel since version 2.6.21 (release Date: 2007-04-25)  
is depended by
CONFIG_ARCH_S3C64XX