CONFIG_NEED_MACH_IO_H is not available for thedefaultarchitecture x86.
Result is shown for architecture arm

CONFIG_NEED_MACH_IO_H (not configurable)

configname: CONFIG_NEED_MACH_IO_H

Linux Kernel Configuration
└─>NEED_MACH_IO_H
In linux kernel since version 3.1 (release Date: 2011-10-24)  
Select this when mach/io.h is required to provide special
definitions for this platform. The need for mach/io.h should
be avoided when possible.

is depended by
CONFIG_MACH_ARMCORE