KVM: arm64: pkvm: Don't mask already zeroed FEAT_SVE

FEAT_SVE is already masked by the fixed configuration for
ID_AA64PFR0_EL1; don't try and mask it at runtime.

No functional change intended.
Signed-off-by: Oliver Upton <oupton@google.com>
Reviewed-by: Fuad Tabba <tabba@google.com>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20220509162559.2387784-3-oupton@google.com

arch/arm64/kvm/hyp/nvhe/sys_regs.c

@@ -90,9 +90,6 @@ static u64 get_pvm_id_aa64pfr0(const struct kvm_vcpu *vcpu)
 	u64 set_mask = 0;
 	u64 allow_mask = PVM_ID_AA64PFR0_ALLOW;
 
-	if (!vcpu_has_sve(vcpu))
-		allow_mask &= ~ARM64_FEATURE_MASK(ID_AA64PFR0_SVE);
-
 	set_mask |= get_restricted_features_unsigned(id_aa64pfr0_el1_sys_val,
 		PVM_ID_AA64PFR0_RESTRICT_UNSIGNED);