project-lakitu: add serial-getty-autologin flag

Add serial-getty-autologin flag (off by default) to enable
autologin on ttyS1 or ttyAMA1 serial ports. This will make
building VIT image as easy as enabling this flag in
profiles/base/package.use

BUG=b/179817368
TEST=presubmit
RELEASE_NOTE=None

Change-Id: I18031b83ffee51dc1ab8da41fff250b5f4dc3506
Reviewed-on: https://cos-review.googlesource.com/c/cos/overlays/board-overlays/+/14557
Reviewed-by: Robert Kolchmeyer <rkolchmeyer@google.com>
Reviewed-by: Ke Wu <mikewu@google.com>
Reviewed-by: Roy Yang <royyang@google.com>
Tested-by: Cusky Presubmit Bot <presubmit@cos-infra-prod.iam.gserviceaccount.com>
3 files changed