extract_files: Add support for paths without system/

Sometime blob directories are contained in dirs not named system
(ex. extracting blobs from another vendor dir) so check if the file
exists without system/ before appending "system/" to filenames.

Change-Id: I4ba946e178260b4f4804b1ac4422645e3085c665
1 file changed
tree: a8cea11b9be693147742e697a361ea1ef0cff375
  1. build/
  2. charger/
  3. config/
  4. overlay/
  5. prebuilt/
  6. sepolicy/
  7. utils/
  8. Android.mk