CONFIG_PC_KEYBOARD is not available for thedefaultarchitecture x86.
Result is shown for architecture powerpc
default or selected kernelversion does not have config value CONFIG_PC_KEYBOARD.
Result is shown for kernelversion 5.4.123
PC PS/2 style Keyboard
configname: CONFIG_PC_KEYBOARD
Linux/PowerPC Kernel Configuration
└─>Kernel options
└─>PC PS/2 style Keyboard