efi_loader: reimplement efi_locate_protocol

The UEFI specification requires that LocateProtol finds the first
handle supporting the protocol and to return a pointer to its
interface.

So we have to assign the protocols to an efi_object and not use
any separate storage.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Signed-off-by: Alexander Graf <agraf@suse.de>
3 files changed