Introduce an ACPI platform driver for ARM / AARCH64 virtual machines. "OvmfPkg/AcpiPlatformDxe/QemuFwCfgAcpiPlatformDxe.inf" downloads ACPI blobs from QEMU over fw_cfg, processes them, and installs the resultant ACPI tables. Contributed-under: TianoCore Contribution Agreement 1.0 Signed-off-by: Laszlo Ersek <lersek@redhat.com> Reviewed-by: Olivier Martin <Olivier.martin@arm.com> git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@16698 6f19259b-4bc3-4df7-8a09-765794883524