uboot: (firmwareOdroidC2/C4) don't invoke patch tool, use patches = [] instead

https://github.com/NixOS/nixpkgs/blob/master/pkgs/stdenv/generic/setup.sh#L948
this can do it nicely.

Signed-off-by: Anton Arapov <anton@deadbeef.mx>

pkgs/development/python-modules/signify/certificate-expiration-date.patch

@@ -0,0 +1,18 @@
+diff --git a/tests/test_authenticode.py b/tests/test_authenticode.py
+index 7e2c709..2f27e09 100644
+--- a/tests/test_authenticode.py
++++ b/tests/test_authenticode.py
+@@ -153,10 +153,12 @@ class AuthenticodeParserTestCase(unittest.TestCase):
+         """this certificate is revoked"""
+         with open(str(root_dir / "test_data" / "jameslth"), "rb") as f:
+             pefile = SignedPEFile(f)
+-            pefile.verify()
++            pefile.verify(verification_context_kwargs=
++                          {'timestamp': datetime.datetime(2021, 1, 1, tzinfo=datetime.timezone.utc)})
+
+     def test_jameslth_revoked(self):
+         """this certificate is revoked"""
++        # TODO: this certificate is now expired, so it will not show up as valid anyway
+         with open(str(root_dir / "test_data" / "jameslth"), "rb") as f:
+             pefile = SignedPEFile(f)
+             with self.assertRaises(VerificationError):