CONFIG_MACH_LAGER is not available for thedefaultarchitecture x86.
Result is shown for architecture arm
default or selected kernelversion does not have config value CONFIG_MACH_LAGER.
Result is shown for kernelversion 6.5.1

Lager board

modulename: board-lager.ko

configname: CONFIG_MACH_LAGER

Linux Kernel Configuration
└─>Lager board
In linux kernel since version 3.1 (release Date: 2011-10-24)  
source code:
arch/arm/mach-shmobile/board-lager.c
selects
CONFIG_USE_OF