message: Turn off XNNPACK in Rpi build
  Temporarily work around the build issue of XNNPACK on Rpi by switching to Ruy.
diff: @@ -18,7 +18,17 @@ set -ex
  NIGHTLY_FLAG=$1
  -bazel build -c opt --config=elinux_armhf --define darwinn_portable=1 --linkopt=-L/usr/lib/arm-linux-gnueabihf tensorflow_lite_support/tools/pip_package:build_pip_package
  +bazel build -c opt --config=elinux_armhf --define=tflite_with_ruy=true \
  + --copt=-march=armv7-a --copt=-mfpu=neon-vfpv4 --copt=-fno-tree-pre \
  + --cxxopt=-fpermissive --define tensorflow_mkldnn_contraction_kernel=0 \
  + --define=raspberry_pi_with_neon=true --define=tflite_with_xnnpack=false \
  + --define darwinn_portable=1 --linkopt=-L/usr/lib/arm-linux-gnueabihf \
  + tensorflow_lite_support/tools/pip_package:build_pip_package
  EXTRA_PKG_NAME_FLAG="--plat-name=manylinux2014-armv7l" ./bazel-bin/tensorflow_lite_support/tools/pip_package/build_pip_package --dst wheels ${NIGHTLY_FLAG}
  -bazel build -c opt --config=elinux_aarch64 --define darwinn_portable=1 --linkopt=-L/usr/lib/aarch64-linux-gnu tensorflow_lite_support/tools/pip_package:build_pip_package
  +
  +bazel build -c opt --define=tflite_with_ruy=true --config=elinux_aarch64 \
  + --define tensorflow_mkldnn_contraction_kernel=0 \
  + --define darwinn_portable=1 \
  + --linkopt=-L/usr/lib/aarch64-linux-gnu \
  + tensorflow_lite_support/tools/pip_package:build_pip_package
  EXTRA_PKG_NAME_FLAG="--plat-name=manylinux2014-aarch64" ./bazel-bin/tensorflow_lite_support/tools/pip_package/build_pip_package --dst wheels ${NIGHTLY_FLAG}
  