npu: Fix device binding error message

Helping someone troubleshoot a Garrison machine, I noticed some of the
BDFs printed here are wrong:

npu_dev_bind_pci_dev: No PCI device for NPU device 0004:00:00.0 to bind to. If you expect a GPU to be there, this is a problem.
npu_dev_bind_pci_dev: No PCI device for NPU device 0004:00:01.0 to bind to. If you expect a GPU to be there, this is a problem.
npu_dev_bind_pci_dev: No PCI device for NPU device 0004:00:04.0 to bind to. If you expect a GPU to be there, this is a problem.
npu_dev_bind_pci_dev: No PCI device for NPU device 0004:00:05.0 to bind to. If you expect a GPU to be there, this is a problem.

Change the prlog() call to print them correctly.

Signed-off-by: Reza Arbab <arbab@linux.ibm.com>
Reviewed-by: Alexey Kardashevskiy <aik@ozlabs.ru>
Signed-off-by: Oliver O'Halloran <oohall@gmail.com>

hw/npu.c

@@ -385,8 +385,12 @@ static void npu_dev_bind_pci_dev(struct npu_dev *dev)
 		}
 	}
 
-	prlog(PR_INFO, "%s: No PCI device for NPU device %04x:00:%02x.0 to bind to. If you expect a GPU to be there, this is a problem.\n",
-	      __func__, dev->npu->phb.opal_id, dev->index);
+	prlog(PR_INFO, "%s: No PCI device for NPU device %04x:%02x:%02x.%x to bind to. If you expect a GPU to be there, this is a problem.\n",
+	      __func__, dev->npu->phb.opal_id,
+	      dev->pvd->bdfn >> 8 & 0xff,
+	      dev->pvd->bdfn >> 3 & 0x1f,
+	      dev->pvd->bdfn & 0x7);
+
 }
 
 static struct lock pci_npu_phandle_lock = LOCK_UNLOCKED;