Add a script to update kernel prebuilts

Bug: 151515361
Test: manual
Signed-off-by: Roman Kiryanov <rkir@google.com>
Merged-In: Id6f5071b0dd78ecc7a81b97feb7a745498e4f4ec
Change-Id: I6c63556589acb80ac37c803bf04bb3b59a19ef77
1 file changed