tests/acpi: disallow acpi test data updates

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
diff --git a/tests/qtest/bios-tables-test-allowed-diff.h b/tests/qtest/bios-tables-test-allowed-diff.h
index 00137ac..dfb8523 100644
--- a/tests/qtest/bios-tables-test-allowed-diff.h
+++ b/tests/qtest/bios-tables-test-allowed-diff.h
@@ -1,2 +1 @@
 /* List of comma-separated changed AML files to ignore */
-"tests/data/acpi/aarch64/virt/SSDT.memhp",