CONFIG_MIPS_CRC_SUPPORT is not available for thedefaultarchitecture x86.
Result is shown for architecture mips

CONFIG_MIPS_CRC_SUPPORT (not configurable)

configname: CONFIG_MIPS_CRC_SUPPORT

Linux Kernel Configuration
└─>Kernel type
└─>MIPS_CRC_SUPPORT
In linux kernel since version 4.2 (release Date: 2015-08-30)  
is selected by
CONFIG_CRYPTO_CRC32_MIPS