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

CONFIG_MSM_SOC_REV_A (not configurable)

configname: CONFIG_MSM_SOC_REV_A

Linux Kernel Configuration
└─>MSM_SOC_REV_A
In linux kernel since version 2.6.35 (release Date: 2010-08-01)  
depends
CONFIG_ARCH_MSM