arm/arm64: add cpu_relax() and friends
Signed-off-by:Andrew Jones <drjones@redhat.com> Signed-off-by:
Marcelo Tosatti <mtosatti@redhat.com>
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Signed-off-by:Andrew Jones <drjones@redhat.com> Signed-off-by:
Marcelo Tosatti <mtosatti@redhat.com>