CONFIG_ARCH_WPCM450 is not available for the default architecture x86.
Result is shown for architecture arm
default or selected kernelversion does not have config value CONFIG_ARCH_WPCM450.
Result is shown for kernelversion 5.13-rc1

Support for WPCM450 BMC (Hermon)

modulename: wpcm450.ko
configname: CONFIG_ARCH_WPCM450

Linux Kernel Configuration
└─> Nuvoton NPCM Architecture
└─> Support for WPCM450 BMC (Hermon)

General support for WPCM450 BMC (Hermon).

Winbond/Nuvoton WPCM450 BMC based on the ARM926EJ-S.

source code: