Now that KVM is equipped to deal with SVE on nVHE, remove the code
preventing it from being used as well as the bits of documentation
that were mentioning the incompatibility.
Acked-by: NWill Deacon <will@kernel.org>
Signed-off-by: NDaniel Kiss <daniel.kiss@arm.com>
Signed-off-by: NMarc Zyngier <maz@kernel.org>