meta-secure-core

efitools: fix build error when efi-secure-boot is not in DISTRO_FEATURES

Merge pull request #136 from yizhao1/fix

layer.conf: enable GRUB_SIGN_VERIFY by default instead of UEFI_SELOADER

Merge pull request #135 from yizhao1/seloader-fix

grub-efi: disable setting page permissions for loaded modules