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

CONFIG_ARCH_MSM (not configurable)

configname: CONFIG_ARCH_MSM

Linux Kernel Configuration
└─>ARCH_MSM
In linux kernel since version 2.6.28 (release Date: 2008-12-24)  
selects

CONFIG_ARCH_REQUIRE_GPIOLIB
CONFIG_COMMON_CLK
CONFIG_GENERIC_CLOCKEVENTS