[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: NLen Brown <len.brown@intel.com>

drivers/acpi/pci_link.c

@@ -233,8 +233,10 @@ acpi_pci_link_check_current(struct acpi_resource *resource, void *context)
 			*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);