We will reuse build_cpus_aml to build DSDT cpus aml in arm/virt ACPI to realize cpu hotplug. Three points are added. 1. Make ACPI IO address space configurable, because ARM64 platforms don't use port IO for ACPI IO space. 2. Add GICC struct building support in _MAT of cpu aml. 3. Let the hotplug method parameter can be NULL, because ACPI GED will realize it. Besides, CPU CPPC building is injected. Signed-off-by: Keqian Zhu <zhukeqian1@huawei.com> Signed-off-by: Salil Mehta <salil.mehta@huawei.com> (cherry picked from commit 4d7c437b4d1a8ac175e7b9224a9e402b619d6cd3)
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