Remove unnecessary friend declarations

Add comments to the remaining friends, so we know what is left if we
decide to remove them later.

Change-Id: I1de929257dc4700960f77902cda3d303177c72cf
1 file changed
tree: bddc97b4c0bfb6c5367f8189a328ac869a8f2759
  1. camera/
  2. cmds/
  3. drm/
  4. include/
  5. media/
  6. services/