Add /dev/stdin am: 471e7f664c am: 95bda576c7 am: 2938129eb4

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

Change-Id: Ic41d3bdd632c3021f5d905a1ff777a3cb11a7061
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>