KVM: arm64: Force guest's HCR_EL2.E2H RES1 when NV1 is not implemented

If NV1 isn't supported on a system, make sure we always evaluate
the guest's HCR_EL2.E2H as RES1, irrespective of what the guest
may have written there.

Reviewed-by: Suzuki K Poulose <suzuki.poulose@arm.com>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20240122181344.258974-10-maz@kernel.org


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