Merge "libbinder: update getCallingPid docs" into main am: e615929b5b

Original change: https://android-review.googlesource.com/c/platform/frameworks/native/+/2871198

Change-Id: I35592bd4dd7cefd81df1f5fab861df69108e65e2
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>