Merge "printflags: introduce device tool to print feature flags" into main am: 28a79fe3

Original change: https://android-review.googlesource.com/c/platform/build/+/2759750



Change-Id: I7f6a2569465e4f2b2f672b88c320a60b74734650
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>