KVM: arm64: nv: Advertise FEAT_TIDCP1 to NV-enabled VMs

While KVM does not expose IMPDEF features to VMs, FEAT_TIDCP1 is an
architecturally-defined EL1 trap of a particular sysreg encoding range.
Furthermore, KVM already advertises this feature to non-NV VMs.

As there is no interaction with EL2 traps, expose the feature.

Signed-off-by: Oliver Upton <oliver.upton@linux.dev>
Signed-off-by: Marc Zyngier <maz@kernel.org>

Author: oupton

arch/arm64/kvm/nested.c

@@ -1525,7 +1525,6 @@ u64 limit_nv_id_reg(struct kvm *kvm, u32 reg, u64 val)
 
 	case SYS_ID_AA64MMFR1_EL1:
 		val &= ~(ID_AA64MMFR1_EL1_CMOW		|
-			 ID_AA64MMFR1_EL1_TIDCP1	|
 			 ID_AA64MMFR1_EL1_nTLBPA	|
 			 ID_AA64MMFR1_EL1_ETS		|
 			 ID_AA64MMFR1_EL1_XNX		|