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In order to preserve some kind of source compatibility between
arm and arm64, introduce read_cpuid_{implementor,part_number,mpidr}
which are used on KVM to find out which CPU we're running on.
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>