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

CONFIG_MXS_OCOTP (not configurable)

modulename: ocotp.ko

configname: CONFIG_MXS_OCOTP

Linux Kernel Configuration
└─>MXS_OCOTP
In linux kernel since version 2.6.39 (release Date: 2011-05-18)  
source code:
arch/arm/mach-mxs/ocotp.c
depends
CONFIG_ARCH_MXS