CONFIG_ARCH_MICROCHIP_POLARFIRE is not available for thedefaultarchitecture x86.
Result is shown for architecture riscv
CONFIG_ARCH_MICROCHIP_POLARFIRE (not configurable)
configname: CONFIG_ARCH_MICROCHIP_POLARFIRE
Linux Kernel Configuration
└─>SoC selection
└─>ARCH_MICROCHIP_POLARFIRE