CONFIG_CPU_S5P6442 is not available for thedefaultarchitecture x86.
Result is shown for architecture arm
default or selected kernelversion does not have config value CONFIG_CPU_S5P6442.
Result is shown for kernelversion 5.4.69

CONFIG_CPU_S5P6442 (not configurable)

modulename: cpu.ko

and/or

setup-i2c0.ko

configname: CONFIG_CPU_S5P6442

Linux Kernel Configuration
└─>CPU_S5P6442
In linux kernel since version 2.6.34 (release Date: 2010-05-16)  
Enable S5P6442 CPU support

source code: