KVM: arm/arm64: vgic: expose (un)lock_all_vcpus

We need to use those helpers in vgic-its.c so let's
expose them in the private vgic header.
Signed-off-by: Eric Auger <eric.auger@redhat.com>
Acked-by: Marc Zyngier <marc.zyngier@arm.com>
Acked-by: Christoffer Dall <cdall@linaro.org>

virt/kvm/arm/vgic/vgic-kvm-device.c

@@ -259,13 +259,13 @@ static void unlock_vcpus(struct kvm *kvm, int vcpu_lock_idx)
 	}
 }
 
-static void unlock_all_vcpus(struct kvm *kvm)
+void unlock_all_vcpus(struct kvm *kvm)
 {
 	unlock_vcpus(kvm, atomic_read(&kvm->online_vcpus) - 1);
 }
 
 /* Returns true if all vcpus were locked, false otherwise */
-static bool lock_all_vcpus(struct kvm *kvm)
+bool lock_all_vcpus(struct kvm *kvm)
 {
 	struct kvm_vcpu *tmp_vcpu;
 	int c;

virt/kvm/arm/vgic/vgic.h

@@ -179,4 +179,7 @@ int vgic_init(struct kvm *kvm);
 int vgic_debug_init(struct kvm *kvm);
 int vgic_debug_destroy(struct kvm *kvm);
 
+bool lock_all_vcpus(struct kvm *kvm);
+void unlock_all_vcpus(struct kvm *kvm);
+
 #endif