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

Qualcomm MSM DT Support

modulename: board-dt.ko

configname: CONFIG_ARCH_MSM_DT

Linux Kernel Configuration
└─>Qualcomm MSM DT Support
In linux kernel since version 3.13 (release Date: 2014-01-19)  
Support for Qualcomm's devicetree based MSM systems.

source code:
selects
CONFIG_ARCH_MSM
CONFIG_ARCH_REQUIRE_GPIOLIB
CONFIG_CLKSRC_OF
CONFIG_GENERIC_CLOCKEVENTS

is selected by
CONFIG_ARCH_MSM8974