bpf: sample: define aarch64 specific registers
bpf: sample: define aarch64 specific registers

Define aarch64 specific registers for building bpf samples correctly.

Signed-off-by: Yang Shi <13279bcd383f6312e7c872835c77108bbfc630d5@linaro.org>
Acked-by: Alexei Starovoitov <c24c0248770ae98831f8a654310d4c2e07514c61@kernel.org>
Signed-off-by: David S. Miller <fe08d3c717adf2ae63592e4c9aec6e3e404d8e3e@davemloft.net>

KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs