authfs: replace tuple w/ anonymous struct in FileConfig

Also added some documentation.

Bug: 173507504
Test: atest
Change-Id: I34b3390531273a3b0d0ae1ef30adbed2164e57cf
2 files changed
tree: 14080a35d2dc2d7fba1904e14cc08c4c4264e882
  1. apex/
  2. authfs/
  3. docs/
  4. microdroid/
  5. tests/
  6. virtmanager/
  7. vm/
  8. .clang-format
  9. PREUPLOAD.cfg