[incfs] Add GetFilledRanges() IncFs api

The new call returns all block ranges that've been filled with
data / hashes in the file

Bug: 152691988
Test: atest libincfs-test

Change-Id: I1aae46f8eb89fc58e5c6792a52d6558f73c2ad33
6 files changed
tree: 6c483b8fbb27dd10d4928c404f640ab79bc5bd39
  1. incfs/
  2. libdataloader/
  3. .clang-format
  4. PREUPLOAD.cfg