Kernel Makefiles changed how to deduce the right arch
lets set it explicilty to enable arm and amd builds.
Signed-off-by: Zvonko Kaiser <zkaiser@nvidia.com>
We need to place the signing key and cert at the right place
and hide the KBUILD_SIGN_PIN from echo'ing or xtrace
Signed-off-by: Zvonko Kaiser <zkaiser@nvidia.com>
Add aarch64 and x86_64 handling. Especially build the Rust
dependency with the correct rust musl target.
Signed-off-by: Zvonko Kaiser <zkaiser@nvidia.com>