liveupdate: luo_file: Add internal APIs for file preservation

Live update orchestrator file handlers depend on the preservation of
other files. To make sure that the dependency is preserved, the file
handlers needs to fetch the preservation token of the preserved
dependency. Similarly during restore, a file handler wants to fetch the
restored file of the dependency.

Add APIs that allows fetching token of dependency during preservation,
and fetching the restored file dependency during restore.

Reviewed-by: Pranjal Shrivastava <praan@google.com>
Signed-off-by: Pasha Tatashin <pasha.tatashin@soleen.com>
Signed-off-by: Samiullah Khawaja <skhawaja@google.com>
Link: https://patch.msgid.link/20260723202912.1467112-2-skhawaja@google.com
Signed-off-by: Mike Rapoport (Microsoft) <rppt@kernel.org>

0 files changed, 0 insertions, 0 deletions