CONFIG_M32R is not available for thedefaultarchitecture x86.
Result is shown for architecture m32r
default or selected kernelversion does not have config value CONFIG_M32R.
Result is shown for kernelversion 6.7-rc3

CONFIG_M32R (not configurable)

configname: CONFIG_M32R

Linux Kernel Configuration
└─>M32R
In linux kernel since version 2.6.12  

is selected by
CONFIG_SERIAL_M32R_SIO