chore: import upstream snapshot with attribution

examples/peripherals/bitscrambler/pytest_bitscrambler_loopback_example.py

@@ -0,0 +1,23 @@
+# SPDX-FileCopyrightText: 2024-2025 Espressif Systems (Shanghai) CO LTD
+# SPDX-License-Identifier: CC0-1.0
+import pytest
+from pytest_embedded import Dut
+from pytest_embedded_idf.utils import idf_parametrize
+from pytest_embedded_idf.utils import soc_filtered_targets
+
+
+@pytest.mark.generic
+@idf_parametrize('target', soc_filtered_targets('SOC_BITSCRAMBLER_SUPPORTED == 1'), indirect=['target'])
+def test_bitscrambler_loopback_example(dut: Dut) -> None:
+    dut.expect_exact('BitScrambler example main', timeout=5)
+    dut.expect_exact('BitScrambler program complete. Input 40, output 40 bytes')
+
+    expected_lines = [
+        'FF 00 00 00 00 00 00 00',
+        '80 80 80 80 80 80 80 80',
+        '01 02 04 08 10 20 40 80',
+        '00 FF 00 FF 00 FF 00 FF',
+        'FF 00 FF 00 FF 00 FF 00',
+    ]
+    for line in expected_lines:
+        dut.expect_exact(line)