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/applications/audio/wavegain/default.nix

@@ -0,0 +1,38 @@
+{ lib, stdenv, fetchFromGitHub, fetchpatch }:
+
+stdenv.mkDerivation {
+  pname = "wavegain";
+  version = "1.3.1";
+
+  src = fetchFromGitHub {
+    owner = "MestreLion";
+    repo = "wavegain";
+    rev = "c928eaf97aeec5732625491b64c882e08e314fee";
+    sha256 = "0wghqnsbypmr4xcrhb568bfjdnxzzp8qgnws3jslzmzf34dpk5ls";
+  };
+
+  patches = [
+    # Upstream fix for -fno-common toolchains.
+    (fetchpatch {
+      name = "fno-common.patch";
+      url = "https://github.com/MestreLion/wavegain/commit/ee5e0f9a0ce34c0cf2769ea6566685a54b938304.patch";
+      sha256 = "11yi0czdn5h5bsqp23cww6yn9lm60cij8i1pzfwcfhgyf6f8ym1n";
+    })
+  ];
+
+  makeFlags = [ "CC=${stdenv.cc.targetPrefix}cc" ];
+
+  installPhase = ''
+    strip -s wavegain
+    install -vD wavegain "$out/bin/wavegain"
+  '';
+
+  meta = {
+    broken = (stdenv.isLinux && stdenv.isAarch64);
+    description = "ReplayGain for wave files";
+    homepage = "https://github.com/MestreLion/wavegain";
+    license = lib.licenses.lgpl21;
+    platforms = lib.platforms.linux;
+    maintainers = [ lib.maintainers.robbinch ];
+  };
+}