CONFIG_X86_INTEL_MID (not configurable)

modulename: mrst.ko

and/or

vrtc.ko

configname: CONFIG_X86_INTEL_MID

Linux Kernel Configuration
└─>Processor type and features
└─>X86_INTEL_MID
In linux kernel since version 3.1 (release Date: 2011-10-24)  
source code:
arch/x86/platform/mrst/mrst.c

is selected by
CONFIG_APB_TIMER

is depended by
CONFIG_X86_MDFLD