Add hidden API public/private list to KATI_RESTAT

Change hidden API public/private list generation build rule so that it
checks if outputs have changed and only commit them when changes have
been made. .KATI_RESTAT instructs ninja to restat the outputs and remove
reverse dependencies when rebuilding dependencies is not needed.

Bug: 113278235
Test: m appcompat
Change-Id: Iad23e302b6c30f9a021200acd4bb20e6062de5a2