KVM: arm64: Enable private memory support when pKVM is enabled

Mark the support for private memory in arm64 as being dependent
on pKVM for now.

Signed-off-by: Fuad Tabba <tabba@google.com>
diff --git a/arch/arm64/include/asm/kvm_host.h b/arch/arm64/include/asm/kvm_host.h
index a7947a1..3636533 100644
--- a/arch/arm64/include/asm/kvm_host.h
+++ b/arch/arm64/include/asm/kvm_host.h
@@ -1266,4 +1266,10 @@
 void kvm_arm_vcpu_power_off(struct kvm_vcpu *vcpu);
 bool kvm_arm_vcpu_stopped(struct kvm_vcpu *vcpu);
 
+#ifdef CONFIG_KVM_PRIVATE_MEM
+#define kvm_arch_has_private_mem(kvm) is_protected_kvm_enabled()
+#else
+#define kvm_arch_has_private_mem(kvm) false
+#endif
+
 #endif /* __ARM64_KVM_HOST_H__ */