Embedded optional protocols that will be obligatory for FileVault and some other cases.
For FileVault there must be some of input drivers:
AppleKeyFeader.efi - recommended
or AppleInputFix.efi - optional
or UsbKbDxe.efi - in some rare cases
Also HashServiceFix.efi may be needed for some quirky hardware.
MD5 (Clover_r5149.pkg) = bc88e0f2221ce0b06d9f78dd3bd06320