libgsid: Document quirks of GetGsiService() am: 457b9c773b am: f9a092151b am: 81925c61bc am: a08c114f98 am: 90b1fe15f3 Original change: https://android-review.googlesource.com/c/platform/system/gsid/+/2179376 Change-Id: Ice08ed1b9da62cb220bd888bf1383c3dc693ee4d Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>