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

Marvell's Flint Development Platform

modulename: flint.ko

configname: CONFIG_MACH_FLINT

Linux Kernel Configuration
└─>Marvell PXA168/910/MMP2 Implmentations
└─>Marvell's Flint Development Platform
In linux kernel since version 2.6.34 (release Date: 2010-05-16)  
Say 'Y' here if you want to support the Marvell MMP2-based
Flint Development Platform.
MMP2-based board can't be co-existed with PXA168-based &
PXA910-based development board. Since MMP2 is compatible to
ARMv6 architecture.

source code:
selects
CONFIG_CPU_MMP2

depends
CONFIG_ARCH_MMP |
| CONFIG_ARCH_MULTI_V7 or CONFIG_ATAGS