build: Add BUILD.bazel file am: b148d78706 am: 11c0b06b54

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

Change-Id: I5321182ecd222a778e5a987faade8d323fd0e237
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>