Merge branch kvm-arm64/gic-v5-nv into kvmarm-master/next

* kvm-arm64/gic-v5-nv:
  : .
  : Add NV support to GICv5 in GICv3 emulation mode, ensuring that the v3
  : guest support is identical to that of a pure v3 platform.
  :
  : Patches courtesy of Sascha Bischoff (20250828105925.3865158-1-sascha.bischoff@arm.com)
  : .
  irqchip/gic-v5: Drop has_gcie_v3_compat from gic_kvm_info
  KVM: arm64: Use ARM64_HAS_GICV5_LEGACY for GICv5 probing
  arm64: cpucaps: Add GICv5 Legacy vCPU interface (GCIE_LEGACY) capability
  KVM: arm64: Enable nested for GICv5 host with FEAT_GCIE_LEGACY
  KVM: arm64: Don't access ICC_SRE_EL2 if GICv3 doesn't support v2 compatibility

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

diff --cc arch/arm64/kvm/arm.c
Simple merge

diff --cc include/kvm/arm_vgic.h
Simple merge