Merge branch kvm-arm64/selftest/timer into kvmarm-master/next

* kvm-arm64/selftest/timer:
  : .
  : Add a set of selftests for the KVM/arm64 timer emulation.
  : Comes with a minimal GICv3 infrastructure.
  : .
  KVM: arm64: selftests: arch_timer: Support vCPU migration
  KVM: arm64: selftests: Add arch_timer test
  KVM: arm64: selftests: Add host support for vGIC
  KVM: arm64: selftests: Add basic GICv3 support
  KVM: arm64: selftests: Add light-weight spinlock support
  KVM: arm64: selftests: Add guest support to get the vcpuid
  KVM: arm64: selftests: Maintain consistency for vcpuid type
  KVM: arm64: selftests: Add support to disable and enable local IRQs
  KVM: arm64: selftests: Add basic support to generate delays
  KVM: arm64: selftests: Add basic support for arch_timers
  KVM: arm64: selftests: Add support for cpu_relax
  KVM: arm64: selftests: Introduce ARM64_SYS_KVM_REG
  tools: arm64: Import sysreg.h
  KVM: arm64: selftests: Add MMIO readl/writel support

Signed-off-by: Marc Zyngier <maz@kernel.org>