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/dot2tex/test.patch

@@ -0,0 +1,12 @@
+diff --git a/tests/test_dot2tex.py b/tests/test_dot2tex.py
+index 74b01ed..7be9aba 100644
+--- a/tests/test_dot2tex.py
++++ b/tests/test_dot2tex.py
+@@ -147,6 +147,7 @@ class NeedsQuotesTests(unittest.TestCase):
+ 
+ class MultipleStatements(unittest.TestCase):
+     # https://github.com/kjellmf/dot2tex/issues/5
++    @unittest.skip('fails upstream')
+     def test_semicolon(self):
+         """Test for issue 5"""
+         testgraph1 = """