CONFIG_EFI is not available for the selected architecture x86.
Result is shown for architecture ia64

CONFIG_EFI (not configurable)

modulename: efi.ko

and/or

capsule.ko

and/or

efi-init.ko

and/or

memmap.ko

and/or

sysfb_efi.ko

configname: CONFIG_EFI

Linux Kernel Configuration
└─>Processor type and features
└─>EFI
In linux kernel since version 2.6.12 )