[ACPI] remove "Resource isn't an IRQ" warning

In the case where a (broken) BIOS gives  us a blank _CRS for
a PCI Interrupt Link Device, the acpi_walk_resources()
will not terminate, but will then give the callback
the resource end tag.  Ignore the end tag.

Signed-off-by: Len Brown <len.brown@intel.com>
diff --git a/drivers/acpi/pci_link.c b/drivers/acpi/pci_link.c
index 1ffc771..07bc6df 100644
--- a/drivers/acpi/pci_link.c
+++ b/drivers/acpi/pci_link.c
@@ -233,8 +233,10 @@
 			*irq = p->interrupts[0];
 			break;
 		}
+		break;
 	default:
-		ACPI_DEBUG_PRINT((ACPI_DB_ERROR, "Resource isn't an IRQ\n"));
+		ACPI_DEBUG_PRINT((ACPI_DB_ERROR, "Resource %d isn't an IRQ\n", resource->type));
+	case ACPI_RESOURCE_TYPE_END_TAG:
 		return_ACPI_STATUS(AE_OK);
 	}
 	return_ACPI_STATUS(AE_CTRL_TERMINATE);