PrePeiUniCore was already named rather awkwardly, but now that the
UniCore bit has become redundant too, let's rename it in a way that
conveys its purpose a bit better: Sec. This also matches what other
architectures and platforms tend to provide.
A straight rename would break all out-of-tree users, so clone it into a
new module with a fresh GUID, giving users some time to update.
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
Ard Biesheuvel