xen/acpi: Replace hard coded "ACPI0007"

Replace hard coded "ACPI0007" with ACPI_PROCESSOR_DEVICE_HID
Reviewed-by: NKonrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Signed-off-by: NAnkur Arora <ankur.a.arora@oracle.com>
Signed-off-by: NBoris Ostrovsky <boris.ostrovsky@oracle.com>

drivers/xen/xen-acpi-processor.c

@@ -408,7 +408,7 @@ static int check_acpi_ids(struct acpi_processor *pr_backup)
 	acpi_walk_namespace(ACPI_TYPE_PROCESSOR, ACPI_ROOT_OBJECT,
 			    ACPI_UINT32_MAX,
 			    read_acpi_id, NULL, NULL, NULL);
-	acpi_get_devices("ACPI0007", read_acpi_id, NULL, NULL);
+	acpi_get_devices(ACPI_PROCESSOR_DEVICE_HID, read_acpi_id, NULL, NULL);
 
 upload:
 	if (!bitmap_equal(acpi_id_present, acpi_ids_done, nr_acpi_bits)) {