project-lakitu: add ebuild for lakitu-kernel 5.10

BUG=b/173821368
TEST=presubmit
RELEASE_NOTE=None

Change-Id: Ic7f6600d436ad7a0dd3adce326173fb1e00298a3
Reviewed-on: https://cos-review.googlesource.com/c/cos/overlays/board-overlays/+/14130
Reviewed-by: Roy Yang <royyang@google.com>
Tested-by: Oleksandr Tymoshenko <ovt@google.com>
9 files changed