CONFIG_ARCH_MSM8960 is not available for thedefaultarchitecture x86.
Result is shown for architecture arm

MSM8960

modulename: board-dt-8960.ko

configname: CONFIG_ARCH_MSM8960

Linux Kernel Configuration
└─>MSM8960
In linux kernel since version 2.6.39 (release Date: 2011-05-18)  
source code:
arch/arm/mach-msm/board-dt-8960.c