Merge branch kvm-arm64/wfxt into kvmarm-master/next

Merge branch kvm-arm64/wfxt into kvmarm-master/next

* kvm-arm64/wfxt:
  : .
  : Add support for the WFET/WFIT instructions that provide the same
  : service as WFE/WFI, only with a timeout.
  : .
  KVM: arm64: Expose the WFXT feature to guests
  KVM: arm64: Offer early resume for non-blocking WFxT instructions
  KVM: arm64: Handle blocking WFIT instruction
  KVM: arm64: Introduce kvm_counter_compute_delta() helper
  KVM: arm64: Simplify kvm_cpu_has_pending_timer()
  arm64: Use WFxT for __delay() when possible
  arm64: Add wfet()/wfit() helpers
  arm64: Add HWCAP advertising FEAT_WFXT
  arm64: Add RV and RN fields for ESR_ELx_WFx_ISS
  arm64: Expand ESR_ELx_WFx_ISS_TI to match its ARMv8.7 definition

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