KVM: arm64: vgic: Demote userspace-triggered console prints to kvm_debug()

Running the KVM selftests results in these messages being dumped
in the kernel console:

[  188.051073] kvm [469]: VGIC redist and dist frames overlap
[  188.056820] kvm [469]: VGIC redist and dist frames overlap
[  188.076199] kvm [469]: VGIC redist and dist frames overlap

Being amle to trigger this from userspace is definitely not on,
so demote these warnings to kvm_debug().
Signed-off-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20211216104507.1482017-1-maz@kernel.org

arch/arm64/kvm/vgic/vgic-v2.c

@@ -293,12 +293,12 @@ int vgic_v2_map_resources(struct kvm *kvm)
 
 	if (IS_VGIC_ADDR_UNDEF(dist->vgic_dist_base) ||
 	    IS_VGIC_ADDR_UNDEF(dist->vgic_cpu_base)) {
-		kvm_err("Need to set vgic cpu and dist addresses first\n");
+		kvm_debug("Need to set vgic cpu and dist addresses first\n");
 		return -ENXIO;
 	}
 
 	if (!vgic_v2_check_base(dist->vgic_dist_base, dist->vgic_cpu_base)) {
-		kvm_err("VGIC CPU and dist frames overlap\n");
+		kvm_debug("VGIC CPU and dist frames overlap\n");
 		return -EINVAL;
 	}
 

arch/arm64/kvm/vgic/vgic-v3.c

@@ -554,12 +554,12 @@ int vgic_v3_map_resources(struct kvm *kvm)
 	}
 
 	if (IS_VGIC_ADDR_UNDEF(dist->vgic_dist_base)) {
-		kvm_err("Need to set vgic distributor addresses first\n");
+		kvm_debug("Need to set vgic distributor addresses first\n");
 		return -ENXIO;
 	}
 
 	if (!vgic_v3_check_base(kvm)) {
-		kvm_err("VGIC redist and dist frames overlap\n");
+		kvm_debug("VGIC redist and dist frames overlap\n");
 		return -EINVAL;
 	}