Merge "Disable prebuilt_build_tools for non-x86 targets" am: 76e661382e am: 6a20a31b15 am: 8f26b16e27 am: 20126a0a50

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

Change-Id: I780757abf61821095b0fb756b339d6520d6de018