CONFIG_MACH_SMARTQ5 is not available for thedefaultarchitecture x86.
Result is shown for architecture arm

SmartQ 5

modulename: mach-smartq5.ko

configname: CONFIG_MACH_SMARTQ5

Linux Kernel Configuration
└─>SmartQ 5
In linux kernel since version 2.6.35 (release Date: 2010-08-01)  
Machine support for the SmartQ 5

source code:
arch/arm/mach-s3c64xx/mach-smartq5.c

depends
 or CONFIG_ARCH_S3C64XX |
| CONFIG_ATAGS or CONFIG_UNUSED_BOARD_FILES