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/diagrams/build_poetry.patch

@@ -0,0 +1,12 @@
+diff --git a/pyproject.toml b/pyproject.toml
+index 2c93a39..6c800e2 100644
+--- a/pyproject.toml
++++ b/pyproject.toml
+@@ -24,3 +24,7 @@ isort = "^4.3"
+ 
+ [tool.black]
+ line-length = 120
++
++[build-system]
++requires = ["poetry_core>=1.0.0"]
++build-backend = "poetry.core.masonry.api"