Merge "Disable prebuilt_build_tools for non-x86 targets" am: 76e661382e am: 6a20a31b15

Original change: https://android-review.googlesource.com/c/platform/prebuilts/build-tools/+/1423268

Change-Id: Iedef77aaf1ad3be8ad772f001a4ed51a19c9c6de