MFC r328335:Add SPDX identifiers for uefisign(8) sources.
Copy head@r302406 to stable/11 as part of the 11.0-RELEASE cycle.Prune svn:mergeinfo from the new branch, as nothing has been mergedhere.Additional commits post-branch will follow.Approved by: re (implicit)Sponsored by: The FreeBSD Foundation
Add uefisign(8), UEFI Secure Boot signing utility.MFC after: 1 monthSponsored by: The FreeBSD Foundation