Merge branch kvm-arm64/gicv5-prologue into kvmarm-master/next

Merge branch kvm-arm64/gicv5-prologue into kvmarm-master/next

* kvm-arm64/gicv5-prologue:
  : .
  : Prologue to GICv5 support, courtesy of Sascha Bischoff.
  :
  : This is preliminary work that sets the scene for the full-blow
  : support.
  : .
  irqchip/gic-v5: Check if impl is virt capable
  KVM: arm64: gic: Set vgic_model before initing private IRQs
  arm64/sysreg: Drop ICH_HFGRTR_EL2.ICC_HAPR_EL1 and make RES1
  KVM: arm64: gic-v3: Switch vGIC-v3 to use generated ICH_VMCR_EL2

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