KVM: arm64: nv: Add ICH_*_EL2 registers to vpcu_sysreg

FEAT_NV2 comes with a bunch of register-to-memory redirection
involving the ICH_*_EL2 registers (LRs, APRs, VMCR, HCR).

Adds them to the vcpu_sysreg enumeration.

Signed-off-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20250225172930.1850838-6-maz@kernel.org


Signed-off-by: Oliver Upton <oliver.upton@linux.dev>