CONFIG_MODULE_SECTIONS is not available for thedefaultarchitecture x86.
Result is shown for architecture riscv

CONFIG_MODULE_SECTIONS (not configurable)

modulename: module-sections.ko

configname: CONFIG_MODULE_SECTIONS

Linux Kernel Configuration
└─>Platform type
└─>MODULE_SECTIONS
In linux kernel since version 4.2 (release Date: 2015-08-30)  
source code:
arch/riscv/kernel/module-sections.c