build: Add BUILD.bazel file am: b148d78706 am: 11c0b06b54 am: d11c6bc653 am: d1f37c215b am: b7060df108

Original change: https://android-review.googlesource.com/c/platform/external/dtc/+/2569090

Change-Id: I6c91a197c98becf9e4916349385fff80c62efc5d
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>