kernelconfig_penguin
CONFIG_ARCH_MULTIPLATFORM 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_MULTIPLATFORM.
Result is shown for kernelversion 6.0-rc7

Allow multiple platforms to be selected

configname: CONFIG_ARCH_MULTIPLATFORM

ARM system type
└─> Allow multiple platforms to be selected