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/compilers/ghc/sphinx-4-configuration.patch

@@ -0,0 +1,11 @@
+--- ghc-8.10.4/docs/users_guide/conf.py.orig	2021-06-21 13:46:34.196383559 +0200
++++ ghc-8.10.4/docs/users_guide/conf.py	2021-06-21 13:46:54.839349941 +0200
+@@ -100,7 +100,7 @@
+ latex_elements = {
+     'inputenc': '',
+     'utf8extra': '',
+-    'preamble': '''
++    'preamble': r'''
+ \usepackage{fontspec}
+ \usepackage{makeidx}
+ \setsansfont{DejaVu Sans}