v21.10.mlnx bluefield build broken.

[nagorny]

v21.10.mlnx branch bluefield build seems to be broken:

Expected Behavior

Normally it should be buildable

Current Behavior

make -j
Could not find any valid candidate for cross files: config/arm/arm64_bluefield_linux_native_gcc

ERROR: Cannot find specified cross file: config/arm/arm64_bluefield_linux_native_gcc
make[1]: *** [Makefile:172: /home/ubuntu/spdk_mlx/dpdk/build-tmp] Error 1
make: *** [/home/ubuntu/spdk_mlx/mk/spdk.subdirs.mk:44: dpdkbuild] Error 2

You refer to the file you create during CI probably:

./dpdkbuild/Makefile:DPDK_OPTS += --cross-file=config/arm/arm64_bluefield_linux_native_gcc
./.ci/dpdk_patch.sh:cat << EOF > dpdk/config/arm/arm64_bluefield_linux_native_gcc

Possible Solution

put this file into repository instead of generating it with the patching script or provide instructions how to build running
dpdk_patch.sh manually.

Steps to Reproduce

Try to build branch manually according to README on the bluefield