CONFIG_PPC_KERNEL_PCREL is not available for thedefaultarchitecture x86.
Result is shown for architecture powerpc

Build Kernel with PC-Relative addressing model

configname: CONFIG_PPC_KERNEL_PCREL

Linux Kernel Configuration
└─>Processor support
└─>Build Kernel with PC-Relative addressing model
In linux kernel since version 6.4 (release Date: 2023-06-25)  
POWER10 and later CPUs support pc relative addressing. Recent
compilers have support for an ELF ABI extension for a pc relative
ABI.

This option builds the kernel with the pc relative ABI model.