MAINTAINERS: add an entry for the lockdown LSM

While lockdown has been present in the kernel for a while, it is
missing a MAINTAINERS entry for some reason.

Signed-off-by: Matthew Garrett <mjg59@srcf.ucam.org>
Signed-off-by: Paul Moore <paul@paul-moore.com>
This commit is contained in:
Paul Moore 2023-11-20 16:45:38 -05:00
commit afe576a620