CONFIG_ARCH_MSM7X30 is not available for thedefaultarchitecture x86.
Result is shown for architecture arm

MSM7x30

modulename: board-msm7x30.ko

configname: CONFIG_ARCH_MSM7X30

Qualcomm MSM SoC Type
└─>MSM7x30
In linux kernel since version 2.6.35 (release Date: 2010-08-01)  
source code:
/arch/arm/mach-msm/
selects
CONFIG_ARCH_MSM_SCORPION
CONFIG_MSM_SMD
CONFIG_MSM_VIC
CONFIG_CPU_V7
CONFIG_MSM_REMOTE_SPINLOCK_DEKKERS