CONFIG_HW_HAS_PCI is not available for thedefaultarchitecture x86.
Result is shown for architecture mips

CONFIG_HW_HAS_PCI (not configurable)

configname: CONFIG_HW_HAS_PCI

Linux/MIPS Kernel Configuration
└─>Bus options (PCI, PCMCIA, EISA, ISA, TC)
└─>HW_HAS_PCI
In linux kernel since version 2.6.12