Add /dev/stdin am: 471e7f664c am: 95bda576c7

Original change: https://android-review.googlesource.com/c/platform/tools/treble/+/2411185

Change-Id: I6cfd51a9b788e4da00c05f94f47f46ea38033ba4
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>