[automerger skipped] Merge "libbinder_ndk: document headers" into sc-dev am:...

[automerger skipped] Merge "libbinder_ndk: document headers" into sc-dev am: d01b8e9a am: 26b8dd0b -s ours

am skip reason: Merged-In I5a83d6eaae9fd7832b322e490ec91f5e4f1005e2 with SHA-1 273da2b1 is already in history

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/native/+/14630601

Change-Id: I65a549b9e040550e8eaf0fb620b5b2fb93e0ed14