CONFIG_ARCH_EFM32 is not available for thedefaultarchitecture x86.
Result is shown for architecture arm
Energy Micro efm32
modulename: clk-efm32gg.ko
configname: CONFIG_ARCH_EFM32
ARM system type
└─>Energy Micro efm32
In linux kernel since version 3.14 (release Date: 2014-03-30)
Support for Energy Micro's (now Silicon Labs) efm32 Giant Gecko
processors.
processors.