Add support for EFI_MP_SERVICES_PROTOCOL during the DXE phase under
AArch64.
PSCI_CPU_ON is called to power on the core, the supplied procedure is
executed and PSCI_CPU_OFF is called to power off the core.
Fixes contributed by Ard Biesheuvel.
Signed-off-by: Rebecca Cran <rebecca@quicinc.com>
Reviewed-by: Ard Biesheuvel <ardb@kernel.org>
Tested-by: Kun Qin <kun.qin@microsoft.com>
Rebecca Cran