CONFIG_EFI_EMBEDDED_FIRMWARE (not configurable)

modulename: embedded-firmware.ko

configname: CONFIG_EFI_EMBEDDED_FIRMWARE

Linux Kernel Configuration
└─>Device Drivers
└─>Firmware Drivers
└─>EFI_EMBEDDED_FIRMWARE
In linux kernel since version 4.14.326 (release Date: 2023-09-23)  
source code:
drivers/firmware/efi/embedded-firmware.c

depends
CONFIG_EFI