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/libraries/mp4v2/fix-build-clang.patch

@@ -0,0 +1,13 @@
+diff --git a/src/mp4.cpp b/src/mp4.cpp
+index c2a7238..9bb3e38 100644
+--- a/src/mp4.cpp
++++ b/src/mp4.cpp
+@@ -870,7 +870,7 @@ MP4FileHandle MP4ReadProvider( const char* fileName, const MP4FileProvider* file
+         }
+ 
+         catch (...) {
+-            return MP4_INVALID_TRACK_ID;
++            return NULL;
+         }
+     }
+