chromeos-base/chromeos-init-systemd: mount efivars fs by default

BUG=b/332593415
TEST=presubmit
RELEASE_NOTE=Mount efivarfs fs by default on EFI-enabled sytems.

Change-Id: I92030ed3f50e567089c100580020c5a5ad9fe7e2
Reviewed-on: https://cos-review.googlesource.com/c/cos/overlays/board-overlays/+/69810
Reviewed-by: Kevin Berry <kpberry@google.com>
Tested-by: Cusky Presubmit Bot <presubmit@cos-infra-prod.iam.gserviceaccount.com>
Reviewed-by: Anil Altinay <aaltinay@google.com>
3 files changed