CONFIG_MACH_KZM9D_REFERENCE is not available for thedefaultarchitecture x86.
Result is shown for architecture arm

KZM9D board - Reference Device Tree Implementation

modulename: board-kzm9d-reference.ko

configname: CONFIG_MACH_KZM9D_REFERENCE

Linux Kernel Configuration
└─>KZM9D board - Reference Device Tree Implementation
In linux kernel since version 3.12 (release Date: 2013-11-03)  
Use reference implementation of KZM9D board support
which makes a greater use of device tree at the expense
of not supporting a number of devices.

This is intended to aid developers

source code: