CONFIG_CRUNCH is not available for thedefaultarchitecture x86.
Result is shown for architecture arm
default or selected kernelversion does not have config value CONFIG_CRUNCH.
Result is shown for kernelversion 6.9.9

Support for MaverickCrunch

modulename: crunch.ko

configname: CONFIG_CRUNCH

Linux Kernel Configuration
└─>Cirrus EP93xx Implementation Options
└─>Support for MaverickCrunch
In linux kernel since version 2.6.18 (release Date: 2006-09-19)  
Enable kernel support for MaverickCrunch.

source code:
/arch/arm/mach-ep93xx/