hw: arm: Support both legacy and current RSDP build
We add the ability to build legacy or current RSDP tables, based on the AcpiRsdpData revision field passed to build_rsdp(). Although arm/virt only uses RSDP v2, adding that capability to build_rsdp will allow us to share the RSDP build code between ARM and x86. Signed-off-by: NSamuel Ortiz <sameo@linux.intel.com> Reviewed-by: NIgor Mammedov <imammedo@redhat.com> Reviewed-by: NAndrew Jones <drjones@redhat.com> Reviewed-by: NMichael S. Tsirkin <mst@redhat.com> Signed-off-by: NMichael S. Tsirkin <mst@redhat.com>
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